German als vs wenn vs wann is not a spelling puzzle. English uses when to ask about a time, introduce one remembered event, describe something that happens whenever a condition holds, and speculate about something that may happen. German usually makes the translator choose which of those jobs the sentence is performing. This guide explains how to translate when into German accurately, how to translate each German construction into natural English, and how to check the choice before sending a message or submitting an assignment.
The visible problem is simple: When I arrived, she smiled, When I visit, she smiles, and When will you arrive? all use the same English word, yet they do not ask German to do the same grammatical work. A literal word-for-word approach produces mistakes that may change a completed memory into a recurring condition, or a question into a statement. Learners searching for German als wenn wann examples, the difference between wenn and wann, and how to say when in German need a decision procedure, not three disconnected vocabulary definitions.
Start with the job. Wann asks or reports an open question about time. Als introduces one specified past occurrence or one bounded past phase. Wenn introduces repetition, a current or future circumstance, or a condition comparable to if. The next questions are whether the event happened once, whether the speaker is asking for the time, and whether the subordinate clause is conditional. The distinctions overlap in English translation, but the German sentence makes them more visible.
Quick answer: choose the meaning before the connector
Question about when? Use wann: Wann beginnt der Kurs? means “When does the course begin?” In an embedded question, the same word remains: Ich weiß nicht, wann der Kurs beginnt, “I do not know when the course begins.” The punctuation may disappear; the question function does not.
One specific episode in the past? Use als: Als der Kurs begann, war ich nervös, “When the course started, I was nervous.” A long past phase such as childhood can still count as one bounded phase: Als ich klein war, lebte ich in Bonn. Do not replace als merely because childhood contained many individual days.
Repeated occasion, future event, general rule or condition? Use wenn: Wenn ich Zeit habe, lese ich, “When/if I have time, I read.” Immer wenn ich Zeit hatte, las ich, “Whenever I had time, I read.” When translating into English, choose “if,” “when,” or “whenever” from the surrounding facts, not from a memorised one-to-one mapping.
What a correct translation preserves
A correct translation preserves the time relationship, frequency, question status and speaker commitment. It must also sound like a sentence a competent speaker would actually use. English “when” is broad because a listener gathers much of the distinction from tense and surrounding text. German splits the load among words, tense forms and subordinate-clause word order. Translators therefore make an explicit decision that the English original may have left implicit.
Consider the pair Als ich nach Hause kam, regnete es and Wenn ich nach Hause kam, regnete es oft. The first presents an occasion: when I got home on that occasion, it was raining. The second presents a pattern: whenever I got home, it often rained. Both may contain past-tense verbs. Consequently “past tense means als” is not a sufficient rule. Frequency and discourse context are decisive. Words such as immer, oft and jedes Mal can expose the repeated reading.
The reverse direction also requires thought. If a German sentence says wenn, an English translation need not always contain the literal word “when.” A conditional promise may need “if.” A routine may require “whenever.” A hypothesis may need “even if” or “provided that” depending on its surrounding structure. Translation accuracy is meaning accuracy, not a matching game between single words.
First principles: four tests
1. Is someone trying to find out the time?
Ask whether “at what time?” or “on what occasion?” could answer the clause. In Wann fährt der Zug? the speaker wants temporal information. The embedded question Sie fragt, wann der Zug fährt also needs an answer. Unlike the main-clause question, the finite verb fährt appears at the end of the embedded clause. That makes wann look superficially like a conjunction, but it still introduces an unresolved time question, not an event trigger.
2. Is this one completed past situation?
If the speaker points to a particular birthday, arrival, meeting, accident, year abroad or period of youth, use als. The situation may have lasted an hour or a decade; it is the bounded reference period that matters. In Als wir in Zürich wohnten, hatten wir keinen Garten the living period is one remembered phase. If the same person moved in and out of Zürich repeatedly, “whenever we stayed there” would introduce wenn instead.
3. Is this a pattern that can happen repeatedly?
If the sentence names an ordinary trigger, repeated past event, habitual response or general tendency, wenn is the natural connector. Wenn ich müde bin, höre ich Musik does not assert one particular tired evening. It describes what happens when the condition arises. Immer wenn der Alarm klingelte, öffneten wir die Tür describes repeated alarms, even though the surrounding narrative uses the past tense. Try substituting “whenever”; if the sentence retains its intended meaning, wenn is likely.
4. Is the situation possible rather than guaranteed?
Wenn also carries conditional “if.” Wenn der Zug pünktlich ist, erreichen wir den Anschluss does not promise punctuality. It says the connection depends on punctuality. Translating it “when the train is on time” can wrongly suggest confidence that the train will be punctual. Conversely, translating an assured timetable as “if” may inject doubt. Translate the evidence and speaker commitment, not a connector in isolation.
Subordinate clauses are the second half of the problem
Both als and wenn commonly introduce subordinate clauses. The finite verb appears at their end: Als sie ankam, not Als sie kam an; Wenn du morgen kommst, not Wenn du kommst morgen. When a subordinate clause opens the sentence, the main finite verb immediately follows the comma: Als sie ankam, begrüßte ich sie. The opening subordinate clause occupies the first position of the whole sentence. Remembering this prevents a correct choice of connector from being undermined by incorrect syntax.
Wann behaves differently in a direct question, where the finite verb usually follows the question word: Wann kommst du? It moves to the end in an indirect question: Ich frage, wann du kommst. English does something similar with direct versus embedded questions: “When are you coming?” becomes “I asked when you were coming,” not “I asked when were you coming.” The translator must identify sentence type before rearranging the words.
The forms also participate in larger grammatical systems. Als can mean “than” after a comparative adjective, as in größer als. That use is outside the present article’s temporal decision and should not be forced into “when.” Wenn forms counterfactual conditions with appropriate verb forms; wann may appear with uncertainty verbs such as wissen, fragen, erfahren or entscheiden. The visible connector is evidence, but its grammatical neighbourhood tells you what job it has.
A repeatable ten-stage translation method
1. Read the whole clause before translating the first word
Find the main action and ask what the “when” clause contributes. Mark whether it supplies a date, an event boundary, a condition, or a recurring trigger. Do this before selecting a German word; otherwise the first plausible dictionary equivalent becomes an anchor that distorts the remainder.
2. Locate the timeline
Write a tiny timeline in your notes: past, current, future, or timeless/general. If the passage is past, avoid automatically choosing als. A repeated past situation still takes wenn. If the situation lies in the future, wenn often introduces the relevant time or condition.
3. Count occurrences, not seconds
Ask whether the text is about one occasion or a class of occasions. A ten-year childhood is one historical phase and may take als; a weekly meeting that happened forty times is repeated and may take wenn. Duration and frequency are different dimensions.
4. Test whether an answer is expected
Replace “when” by “at what time?” If the sentence seeks such an answer, consider wann. This test works inside a larger sentence, too: “Tell me when the office opens” reports a question, not an office-opening condition.
5. Test the conditional reading
Try “if” instead of “when.” If it preserves the uncertainty of the original, wenn is usually doing conditional work. If “if” changes a reliable timetable into a mere possibility, retain the temporal reading in your English version even though German may use wenn.
6. Test the habitual reading
Try “whenever” or “every time.” A successful substitution points to wenn, including past narration. When the source implies repetition without spelling it out, make sure the wider context supports the habitual interpretation.
7. Build German clause order
Place the finite verb at the end of a subordinate clause introduced by als, wenn or embedded-question wann. For a direct question, use normal interrogative word order. Build the sentence around the verb rather than trying to translate every English position.
8. Check the main clause after the comma
If the German subordinate clause comes first, start the main clause with its finite verb: Wenn ich Zeit habe, rufe ich an. Do not add an extra pronoun before the main verb as a literal copy of English “when I have time, I call.”
9. Back-translate the commitment
Read your German sentence back as “when, whenever, if or at what time.” If the English back-translation expresses a different frequency, certainty or question from the source, revisit the connector and surrounding tense.
10. Test against one contrasting example
Before publishing or submitting, form a nearby sentence in which the other word would be appropriate. Contrast a single visit with a repeated visit, or a question about arrival with a condition on arrival. If you cannot explain the change, the sentence probably needs another check.
Worked examples: choosing the right word in real contexts
Example 1: Als ich gestern ankam, war die Tür offen.
Natural English: When I arrived yesterday, the door was open.
Why this works: Yesterday identifies one arrival. The main point is the state of the door at that event, not a rule about what doors are generally like. Contrast or transfer: Compare Immer wenn ich ankam, which would describe several arrivals. The adverb changes the temporal scope and therefore the conjunction.
Example 2: Als ich zwölf war, spielte ich Klavier.
Natural English: When I was twelve, I played the piano.
Why this works: Being twelve is one bounded life stage even though piano practice may have happened many times inside that year. Contrast or transfer: Do not count each practice session and replace als with wenn; the subordinate clause names the age period.
Example 3: Als wir das Angebot erhielten, waren wir überrascht.
Natural English: When we received the offer, we were surprised.
Why this works: Receipt of that offer is a particular event. The sentence reports a reaction at the moment the news arrived. Contrast or transfer: A repeated process would be Immer wenn wir ein Angebot erhielten, where the offers are multiple.
Example 4: Als das Licht ausging, blieb das Publikum still.
Natural English: When the lights went out, the audience stayed quiet.
Why this works: This narrates a single blackout and the immediate response. It belongs to an account of a completed scene. Contrast or transfer: Do not translate as a general instruction about how audiences behave during power failures.
Example 5: Als ich in Wien lebte, lernte ich Deutsch.
Natural English: When I lived in Vienna, I learned German.
Why this works: One residence period can be framed with als. The phrase does not require a single day or instant. Contrast or transfer: The same English text might need wenn if the speaker means several distinct stays; inspect the biography.
Example 6: Als sie den Brief öffnete, lächelte sie.
Natural English: When she opened the letter, she smiled.
Why this works: The sequence belongs to one narrated occasion. The two verbs show successive completed events. Contrast or transfer: This is not a request for the time of letter-opening, so wann would ask the wrong question.
Example 7: Als die Prüfung begann, war es ruhig.
Natural English: When the examination began, it was quiet.
Why this works: The examination has a specific starting point. Als anchors the observation to that opening. Contrast or transfer: In a rule such as “Whenever an examination begins,” use wenn and make the recurrent setting clear.
Example 8: Als ich die Nachricht las, rief ich sie an.
Natural English: When I read the message, I called her.
Why this works: The call followed one concrete reading. A translation should preserve the sequence of the personal story. Contrast or transfer: Avoid moving to wenn unless the speaker describes a repeated habit of calling after every message.
Example 9: Wenn es regnet, nehmen wir den Bus.
Natural English: When it rains, we take the bus.
Why this works: This is a regular response to recurring rainy conditions. “Whenever it rains” is a useful back-translation. Contrast or transfer: If it is a plan contingent on tomorrow’s weather, “If it rains, we will take the bus” may be better in English.
Example 10: Immer wenn er lächelt, lächelt sie auch.
Natural English: Whenever he smiles, she smiles too.
Why this works: The explicit immer signals recurrence. The subject does not describe one smile but a patterned response. Contrast or transfer: English “when” is acceptable but loses some emphasis; “whenever” preserves the frequency strongly.
Example 11: Wenn ich früher Zeit hatte, ging ich schwimmen.
Natural English: Whenever I had time before, I went swimming.
Why this works: Past tense is compatible with wenn because the proposition is habitual. The translation requires a repeated past reading. Contrast or transfer: The adjective früher places the habit in an earlier phase without making each swim one isolated incident.
Example 12: Wenn du morgen Zeit hast, können wir sprechen.
Natural English: If you have time tomorrow, we can talk.
Why this works: The conversation depends on tomorrow’s availability. The speaker is making a conditional proposal, not an appointment confirmation. Contrast or transfer: Translate as “when” only if the context assumes the time will be available. Certainty cannot be inferred from wenn alone.
Example 13: Wenn die Sitzung endet, schicken wir das Protokoll.
Natural English: When the meeting ends, we will send the minutes.
Why this works: The clause marks a future trigger that is expected in the workflow. English “when” is more natural than “if” in a routine timetable. Contrast or transfer: Do not substitute als simply because a particular meeting will end once; it has not ended yet.
Example 14: Wenn die Sitzung heute ausfällt, informieren wir alle.
Natural English: If today’s meeting is cancelled, we will inform everyone.
Why this works: Cancellation is a possibility, so English “if” communicates conditionality better than “when.” Contrast or transfer: The same German connector can label both an expected future trigger and an uncertain condition; context distinguishes them.
Example 15: Wenn man Wasser erhitzt, steigt die Temperatur.
Natural English: When you heat water, its temperature rises.
Why this works: This expresses a general causal tendency, not a dated event. Wenn fits a general rule. Contrast or transfer: Do not turn a general observation into a single past moment; the scientific proposition is not part of one anecdote.
Example 16: Wenn sie müde ist, trinkt sie Tee.
Natural English: When she is tired, she drinks tea.
Why this works: The clause describes a habitual personal response. It is not necessarily happening at the moment of speaking. Contrast or transfer: A one-off past narrative would require a different time frame and might take als.
Example 17: Wenn du willst, helfe ich dir.
Natural English: If you want, I’ll help you.
Why this works: The listener’s wish is a condition on the offer. English “if” also carries the courtesy of leaving the choice open. Contrast or transfer: “When you want” could sound oddly assured or suggest a timing instruction rather than an open offer.
Example 18: Immer wenn wir uns trafen, sprachen wir über Bücher.
Natural English: Whenever we met, we talked about books.
Why this works: The past scene repeats across multiple meetings. Immer wenn retains the frequency even though each meeting is over. Contrast or transfer: This is the classic test against “past tense = als”; temporal repetition wins.
Example 19: Wenn der Bildschirm einfriert, starten Sie das Programm neu.
Natural English: If the screen freezes, restart the program.
Why this works: This is a troubleshooting condition in an instruction. A good English translation keeps the possibility rather than assuming failure occurs. Contrast or transfer: Avoid translating it as “when the screen froze,” which changes a prospective instruction into a report.
Example 20: Wenn es dir besser geht, gehen wir spazieren.
Natural English: When you feel better, we’ll go for a walk.
Why this works: The speaker treats recovery as a likely future trigger and proposes an activity after it. English “when” is reassuring. Contrast or transfer: In a medical or uncertain context, “if” might be more cautious; the translator must preserve the original speaker’s stance.
Example 21: Wann beginnt der Unterricht?
Natural English: When does class begin?
Why this works: The question seeks the beginning time. Wann functions as a question word before the finite verb. Contrast or transfer: Neither als nor wenn can replace it in the same direct-question structure.
Example 22: Wann hast du das erfahren?
Natural English: When did you learn that?
Why this works: The speaker wants to locate a past discovery in time. Past tense does not force als when the clause is interrogative. Contrast or transfer: Before choosing a temporal conjunction, distinguish asking about a past event from introducing the event.
Example 23: Ich weiß nicht, wann sie kommt.
Natural English: I don’t know when she’s coming.
Why this works: This reports an unresolved question of arrival time. The final verb kommt reflects an embedded question. Contrast or transfer: Compare Ich rufe an, wenn sie kommt: there, her arrival triggers my call, so the meaning is entirely different.
Example 24: Sag mir bitte, wann der Laden schließt.
Natural English: Please tell me when the shop closes.
Why this works: The request is for closing time. The embedded clause contains wann and verb-final order. Contrast or transfer: “Tell me when it closes” may be ambiguous in English; German can distinguish a request for information from a conditional instruction.
Example 25: Ich frage mich, wann er die Entscheidung trifft.
Natural English: I wonder when he will make the decision.
Why this works: The uncertainty concerns the timing of the decision. The main clause ich frage mich announces an internal question. Contrast or transfer: Avoid wenn, which would introduce a condition on the decision rather than wonder about its date.
Example 26: Weißt du, wann der nächste Zug fährt?
Natural English: Do you know when the next train leaves?
Why this works: The entire sentence is a direct yes/no question containing a separate indirect time question. Wann remains correct in the embedded clause. Contrast or transfer: Do not move the embedded verb to direct-question order; only the outer clause is interrogative.
Example 27: Als sie anrief, war ich unterwegs.
Natural English: When she called, I was out.
Why this works: The call is an event in a completed story. The main clause describes the simultaneous condition during that call. Contrast or transfer: Contrast Wenn sie anruft, bin ich oft unterwegs, which presents repeated calls and repeated unavailability.
Example 28: Wenn sie anruft, bin ich oft unterwegs.
Natural English: When she calls, I’m often out.
Why this works: The adverb oft signals a recurring coincidence, not a specific episode. Use wenn even if a listener remembers individual calls. Contrast or transfer: This pair demonstrates why context and quantifiers outrank surface English wording.
Example 29: Als wir die Grenze überquerten, wurde es dunkel.
Natural English: As we crossed the border, it became dark.
Why this works: One narrated crossing anchors a changing scene. English “as” can be smoother than “when,” although German still uses als. Contrast or transfer: Translation is not one-to-one: the best English connector can change while the historical relation remains constant.
Example 30: Wenn wir die Grenze überqueren, kontrollieren wir die Papiere.
Natural English: Whenever we cross the border, we check the documents.
Why this works: The clause describes a recurring procedure. Its German connector is wenn, not als. Contrast or transfer: An English translator may select “whenever” to make the iterative procedure unmistakable.
Example 31: Wann genau wurde der Vertrag unterschrieben?
Natural English: Exactly when was the contract signed?
Why this works: The passive sentence asks for a date or time. The question remains wann despite discussing a completed event. Contrast or transfer: The object of inquiry is the timing, not the circumstance introduced by a subordinate als clause.
Example 32: Wir klären, wann die Unterlagen eintreffen.
Natural English: We’ll establish when the documents will arrive.
Why this works: The subordinate clause is an information gap: an arrival schedule is unknown. Wann marks the question the team is trying to answer. Contrast or transfer: Compare Wir beginnen, wenn die Unterlagen eintreffen: now arrival is the trigger for starting.
Example 33: Wir beginnen, wenn die Unterlagen eintreffen.
Natural English: We’ll begin when the documents arrive.
Why this works: The speaker sets a trigger rather than requesting the arrival time. Wenn introduces the condition for the main action. Contrast or transfer: If timing is uncertain but work definitely waits for receipt, English “when” often fits better than “if.”
Example 34: Als die Ausstellung eröffnet wurde, kamen viele Gäste.
Natural English: When the exhibition opened, many guests arrived.
Why this works: This is a remembered opening event and response. Als fits one specific opening. Contrast or transfer: A museum operating manual saying “When an exhibition opens, security checks …” needs a generic wenn instead.
Example 35: Wenn eine Ausstellung eröffnet wird, prüfen wir den Zugang.
Natural English: When an exhibition opens, we check access.
Why this works: This is a standard procedure applying across exhibitions. Repetition, not tense, determines the German connector. Contrast or transfer: The sentence may look singular in English because “an exhibition” is singular, but the rule has an indefinite subject.
Example 36: Als wir uns zum ersten Mal trafen, war ich sehr nervös.
Natural English: When we first met, I was very nervous.
Why this works: The first meeting is a specific completed event and the main clause describes the speaker’s feeling at that moment. Contrast or transfer: Contrast Immer wenn wir uns trafen, war ich nervös, which describes repeated meetings. To say “I remember how we first met,” a different construction with wie may be more idiomatic.
Common failure modes and repairs
1. One English word, one German word
Replacing every English “when” with wenn because it was learned first creates errors in questions and past narratives. Repair by classifying the clause as question, specific past, repeated/general, or conditional before selecting the connector.
2. Past tense treated as a complete rule
A past verb does not guarantee als. Immer wenn ich ihn sah is past and repeated. Repair by asking whether the source covers one occasion or a recurring series.
3. Counting childhood as many repetitions
Als ich klein war names a past phase rather than repeated beginnings of childhood. Repair by separating the duration of a phase from the number of occasions named by the subordinate clause.
4. Using wann to open a time-trigger clause
Wann du kommst, rufe ich dich an is wrong if you mean “I’ll call you when you arrive.” Use wenn. Wann belongs to direct and indirect questions about timing.
5. Using wenn after ‘I don’t know’ automatically
Ich weiß nicht, wann er kommt means the arrival time is unknown. Using wenn would usually require a different construction and meaning; test whether a time answer is sought.
6. Ignoring subordinate-clause word order
A correct als or wenn with English word order still sounds wrong. Repair with the finite verb at the clause end and the main finite verb immediately after an initial subordinate clause.
7. Overstating a condition as certainty
“When the funds arrive” can imply a stronger expectation than “if the funds arrive.” Inspect whether German wenn encodes a conditional proposal. Choose the English connector that preserves commitment.
8. Overstating a timetable as a doubt
“If the train arrives at six, we’ll board” may question an agreed schedule. If the German sentence describes a normal trigger, “when” may be more natural than “if,” despite the same wenn.
9. Treating als as always temporal
Größer als means “bigger than,” not “bigger when.” Identify the comparative adjective first. A guide about temporal als must not erase its separate comparative use.
10. Forgetting the indirect-question distinction
In Ich frage, wann er kommt, wann introduces an embedded question. Do not use direct-question ordering inside it; the embedded finite verb belongs at the end.
11. Replacing context with a mnemonic
“Als once, wenn repeatedly, wann question” is a helpful starting mnemonic, not a complete translation. Future events and hypothetical conditions also take wenn, and specific past phases take als even when they last years.
12. Translating outside the real document
An arrival sentence in a travel diary is different from one in a set of standing instructions. Repair by reading the heading, preceding paragraph and intended audience; they determine whether a sentence is an account, rule or request.
Guided practice: attempt the decision before reading the reason
Practice 1: ___ ich gestern aufwachte, war der Strom weg. Answer: Als. One particular waking is narrated, so the clause is a single past event.
Practice 2: ___ du morgen ankommst, schicke mir eine Nachricht. Answer: Wenn. The arrival is a future trigger for a message, not a request for the arrival time.
Practice 3: Weißt du, ___ der Laden öffnet? Answer: wann. This is an embedded time question governed by weißt du.
Practice 4: Immer ___ wir dort waren, regnete es. Answer: wenn. The situation recurred over multiple visits.
Practice 5: ___ ich ein Kind war, wohnte ich auf dem Land. Answer: Als. Childhood is one historical phase.
Practice 6: ___ du Hilfe brauchst, sag Bescheid. Answer: Wenn. The offer is conditional on need.
Practice 7: ___ beginnt das Konzert? Answer: Wann. The speaker directly asks for the time.
Practice 8: Ich erinnere mich, ___ wir uns kennenlernten. Answer: als. The meeting is one remembered event; in polished prose another construction with wie may also be suitable depending on intended focus.
Practice 9: ___ ich Kaffee trinke, schlafe ich oft schlecht. Answer: Wenn. The sentence expresses a repeated response.
Practice 10: Sie wollte wissen, ___ der Brief abgeschickt wurde. Answer: wann. The subordinate clause reports an open question about dispatch time.
Practice 11: ___ der Sturm begann, waren wir zu Hause. Answer: Als. The onset of that storm is one narrated past event.
Practice 12: ___ ich Zeit hätte, würde ich öfter kochen. Answer: Wenn. The sentence presents a hypothetical condition.
Practice 13: ___ wir nächste Woche sprechen, besprechen wir den Plan. Answer: Wenn. This is a prospective time clause referring to a planned meeting.
Practice 14: ___ er jung war, interessierte er sich für Musik. Answer: Als. A past life phase anchors the recollection.
Practice 15: ___ es geklingelt hat, ist er immer zur Tür gegangen. Answer: Wenn. The word immer shows repeated ringing events.
Practice 16: ___ ist der Abgabetermin? Answer: Wann. The question seeks the deadline date or time.
Practice 17: ___ die Ampel rot ist, bleiben wir stehen. Answer: Wenn. A recurring traffic rule applies whenever the condition holds.
Practice 18: ___ die Ampel gestern rot wurde, hielt er an. Answer: Als. The sentence narrates a particular signal change yesterday.
Practice 19: Sag mir, ___ du fertig bist. Answer: wann. If the request means ‘tell me at what time you will be ready’, wann; if it means ‘tell me once you have finished’, rephrase as Sag mir Bescheid, wenn du fertig bist.
Practice 20: Wir beginnen, ___ alle da sind. Answer: wenn. Being present triggers the start; the speaker is not asking what time attendance will be complete.
Transfer practice: stories, schedules, instructions and conversations
For a diary entry, underline every remembered episode and ask whether the event is being described once or as part of a pattern. A travel diary may use als in one paragraph and immer wenn in the next without inconsistency. For a company procedure, read for rules and future triggers; these often take wenn. For a question-and-answer transcript, identify the moments where a speaker actually requests or reports timing information; that is the territory of wann.
For editing practice, take the sentence “When I arrive, I will call.” Write three versions: a future trigger with wenn, a past recollection with als, and a direct question with wann. Next change the future trigger into a hypothetical condition, then into a recurring habit. Explain the switch using frequency and certainty rather than only using the words “past” or “future.” This builds transfer because it treats grammar as a set of relationships among events.
If you use a machine-translation system, do not ask only whether its German sentence reads fluently. Ask whether it recognises that “when we visited” might mean either one trip or every visit. Supply a short note such as “single occasion in 2022” or “whenever this happened,” then compare the output. The model’s confidence does not establish the factual frequency. The human editor owns the source meaning and must test it.
Frequently asked questions
What is the difference between als and wenn?
In temporal clauses, als introduces one specific past event or bounded past phase. Wenn introduces recurring events, present or future circumstances, and conditions. Both can be translated “when,” so English wording alone is not enough.
Can wenn be used in the past?
Yes. Past habits and repeated occasions use wenn, often with immer or jedes Mal. The mistake is to assume that a past verb automatically forces als.
When should I use wann?
Use wann when the sentence asks directly or indirectly at what time an event happens. “I know when she arrives” can contain wann because it reports knowledge of the arrival time.
Does wann always have a question mark?
No. Ich weiß nicht, wann er kommt is a statement containing an embedded question. The sentence has no final question mark, but the embedded time information is unknown.
Can als describe many years?
Yes. “When I was a child” or “when I lived abroad” can name one continuous historical phase even if the phase spans years. The connector does not count the days inside that phase.
Is wenn the same as if?
Sometimes. Wenn can introduce a condition best translated by “if,” but it can also introduce a regular trigger best translated by “when” or “whenever.” The speaker’s commitment determines the English choice.
Why does the verb go to the end?
Because these clauses follow German subordinate-clause syntax. Als sie kam, wenn er Zeit hat, and embedded wann er kommt all put the finite verb at the end of the subordinate clause.
What if I cannot tell whether an event was repeated?
Do not invent information. Read surrounding context; ask the source author if available; or rewrite the English with a clear marker such as “on that day” or “every time” before choosing German grammar.
Is als also used in comparisons?
Yes, as in größer als meaning “bigger than.” This is a separate grammatical use and does not replace the temporal distinction discussed in this guide.
How can I practise efficiently?
Choose ten ambiguous English sentences containing “when.” For each, record whether it requests time, describes one past event, describes a habit, or sets a condition. Then translate, back-translate, and explain the intended reading to someone else.
Where to read next
If your problem is the order of German verbs after connectors, continue with German weil, dass and obwohl clauses. For how a conditional can express an unreal wish or polite request, see German Konjunktiv II. Those articles solve different jobs; neither duplicates the present distinction between als, wenn and wann.
To improve the vocabulary needed for accurate sentence interpretation, use the Vocabulary Learning Hub. To connect grammar with audience, purpose and natural English output, continue to How English Works. For a reliable external grammar comparison, consult the Lingolia German als/wenn/wann lesson and the University of Michigan German conjunctions reference.
Final check: Is the clause asking for an answer, locating one past episode, describing a recurring trigger, or setting a condition? If you can explain that choice and preserve it in the translated sentence, you have a much stronger defence against the most common “when” translation errors.