Temporal Subordinate Clauses in German

In Brief

German temporal subordinate clauses say when one event happens in relation to another. They begin with conjunctions such as als, wenn, bevor, nachdem, während, bis, seit and sobald, and the conjugated verb normally goes at the end: Bevor du gehst, ruf mich an. Use als for a single past occasion and wenn for repeated events or events in the present and future.

Overview

A temporal clause places an action in time: before another action, after it, at the same time, up to an endpoint, or from a starting point onward. It is a subordinate clause (a clause that depends on a main clause and cannot normally stand alone in this use). In Nachdem er gegessen hatte, ging er, the clause beginning with nachdem gives the time background for ging er.

At B1, the main challenge is not only choosing the right conjunction. You must also put the conjugated verb at the end of the temporal clause and handle the word order of the main clause correctly. English often uses “when” for several different relationships; German regularly makes distinctions that English leaves to context, especially als versus wenn.

These clauses are common in conversation, instructions, stories, emails and news. Learning them lets you connect short statements such as Ich esse. Dann gehe ich los. into a more natural sentence: Nachdem ich gegessen habe, gehe ich los.

How It Works

The basic sentence pattern

The conjunction occupies the first position inside the subordinate clause. Its finite verb (the verb form marked for person and tense) moves to the end.

German pattern	English	Note
Ich rufe dich an, bevor ich losfahre.	I’ll call you before I set off.	Main clause first; the temporal clause ends in losfahre.
Bevor ich losfahre, rufe ich dich an.	Before I set off, I’ll call you.	Temporal clause first; the main clause begins with rufe.

A comma separates the clauses in either order. When the subordinate clause comes first, the whole clause fills the first position of the sentence. The finite verb of the main clause therefore follows immediately: Wenn ich Zeit habe, komme ich vorbei—not ich komme.

With a separable verb, the prefix does not split off at the end of a subordinate clause:

• Main clause: Der Zug kommt um acht an.
• Subordinate clause: …, sobald der Zug um acht ankommt.

With a modal verb, both verbs gather at the end, with the conjugated modal last: …, bevor ich zur Arbeit gehen muss.

Choosing the conjunction

Conjunction	Core meaning	Typical time relationship	Example
als	when	One occasion or one continuous period in the past	Als ich in Berlin wohnte, fuhr ich oft Rad.
wenn	when; whenever	Repetition; present or future event	Wenn ich frei habe, besuche ich meine Eltern.
bevor	before	Subordinate-clause event happens later	Bevor wir essen, waschen wir uns die Hände.
nachdem	after	Subordinate-clause event happens first	Nachdem wir gegessen hatten, gingen wir spazieren.
während	while	Events overlap	Während sie kocht, decke ich den Tisch.
bis	until	Event continues up to an endpoint	Warte, bis ich zurückkomme.
seit / seitdem	since	Situation begins in the past and continues	Seitdem ich hier wohne, fahre ich mit dem Rad.
sobald	as soon as	Second event follows immediately	Sobald ich angekommen bin, melde ich mich.

Als or wenn?

This is the most important contrast.

Use als for a unique event, situation or bounded period in the past:

• Als ich gestern nach Hause kam, schliefen die Kinder schon.
• Als ich jung war, spielte ich Fußball.

The second example describes a period, not one instant, but it is still one completed phase of the speaker’s life.

Use wenn for:

1. repeated past events: Wenn wir früher Urlaub hatten, fuhren wir ans Meer;
2. present events: Wenn es regnet, nehme ich den Bus;
3. future events: Wenn du morgen kommst, backe ich einen Kuchen;
4. conditions meaning “if”: Wenn du Zeit hast, können wir reden.

For repeated events, immer wenn (“whenever”) makes the meaning especially clear. English “when” does not force this one-time/repeated distinction, so it is worth asking yourself: “one completed past occasion, or a recurring/open situation?”

Bevor and nachdem

Bevor introduces the event that occurs later than the main-clause event:

Bevor du gehst, ruf mich an. First call; then leave.

Nachdem introduces the event that is already complete before the main-clause event:

Nachdem er gegessen hatte, ging er. First he ate; then he left.

In careful narration, German can mark this sequence with different past tenses. The pluperfect (Plusquamperfekt, a form for an event already completed before another past event) appears in the nachdem clause, and the simple past appears in the main clause:

Nachdem er gegessen hatte, ging er.

For present or future contexts, German commonly uses the perfect in the nachdem clause and the present in the main clause:

Nachdem ich die E-Mail geschrieben habe, mache ich Feierabend.

German often uses the present tense for the future when a time expression makes the timing clear. You do not need a future form after wenn, sobald or bis: Sobald sie morgen ankommt, rufe ich dich an.

Während, bis, seit and sobald

Während presents two actions as overlapping. They do not need to start or end at exactly the same moment: Während ich arbeitete, hörte ich Musik.

Bis focuses on an endpoint. The main situation lasts up to the event in the bis clause: Bleib hier, bis der Arzt kommt. Compare bevor: Geh, bevor der Arzt kommt tells you to leave earlier; Bleib, bis der Arzt kommt tells you to remain up to that point.

Seit and seitdem introduce a starting point in the past whose effect continues into the reference time. German normally uses the present if the situation still continues now: Seit ich Deutsch lerne, verstehe ich mehr (“Since I started learning German, I have understood more / I understand more”). This differs from the English habit of using the present perfect after “since.” Seitdem can also stand alone as an adverb: Ich bin umgezogen. Seitdem fahre ich mit dem Zug.

Sobald means that one event follows another with little or no delay: Sobald die Ergebnisse da sind, informieren wir Sie.

Examples in Context

German	English	Note
Als ich jung war, spielte ich Fußball.	When I was young, I played football.	One completed period in the past
Als das Licht ausging, wurde es plötzlich still.	When the light went out, it suddenly became quiet.	Single past event
Immer wenn ich dieses Lied höre, denke ich an Wien.	Whenever I hear this song, I think of Vienna.	Repeated event
Wenn du morgen Zeit hast, trinken wir einen Kaffee.	When you have time tomorrow, we’ll have a coffee.	Future meaning with present tense
Bevor du gehst, ruf mich an.	Before you leave, call me.	The call comes first
Ich prüfe die Adresse, bevor ich das Paket abschicke.	I check the address before I send the parcel.	Separable verb remains joined
Nachdem er gegessen hatte, ging er.	After he had eaten, he left.	Earlier past marked by pluperfect
Nachdem wir alles besprochen haben, treffen wir eine Entscheidung.	After we have discussed everything, we’ll make a decision.	Perfect followed by present/future meaning
Während ich das Abendessen vorbereite, kannst du den Tisch decken.	While I prepare dinner, you can set the table.	Simultaneous actions
Bitte warten Sie hier, bis Ihre Nummer aufgerufen wird.	Please wait here until your number is called.	Endpoint; formal instruction
Seit ich näher am Büro wohne, brauche ich kein Auto mehr.	Since I have lived closer to the office, I no longer need a car.	Continuing situation; German present
Sobald der Zug ankommt, steigen viele Leute aus.	As soon as the train arrives, many people get off.	Immediate sequence

Common Mistakes

Using wenn for every English “when”

• Wrong: Wenn ich gestern ankam, war niemand da.
• Right: Als ich gestern ankam, war niemand da.
• Why: Yesterday’s arrival was a single past event, so use als. Use wenn for repetition, present/future time or a condition.

Leaving the verb in main-clause position

• Wrong: Bevor du gehst, du rufst mich an.
• Right: Bevor du gehst, rufst du mich an.
• Why: The opening subordinate clause takes the first sentence position. The main-clause verb must come next. In an imperative, the given example is Bevor du gehst, ruf mich an.

Splitting a separable verb

• Wrong: Ich warte, bis der Zug kommt an.
• Right: Ich warte, bis der Zug ankommt.
• Why: In a subordinate clause, the verb moves to the end and the prefix rejoins it.

Copying English tense after seit

• Wrong: Seit ich hier gewohnt habe, kenne ich viele Leute. (if you still live here)
• Right: Seit ich hier wohne, kenne ich viele Leute.
• Why: German generally uses the present for an activity that began in the past and is still continuing.

Confusing bis and bevor

• Wrong: Warte hier, bevor ich zurückkomme.
• Right: Warte hier, bis ich zurückkomme.
• Why: Waiting continues up to an endpoint, so bis is required. Bevor would place the waiting before the return without expressing continuation to that point.

Usage Notes

In conversation, tense choices are often less rigid than textbook timelines suggest. Speakers frequently use the perfect for past events: Nachdem ich gegessen habe, bin ich nach Hause gegangen. The pluperfect plus simple past pattern remains especially useful in written narration because it makes the order unmistakable.

A temporal clause can come first when it supplies the setting or when the speaker wants to highlight timing. It can come second when the main information matters first. The time relationship itself does not change: Ich rufe dich an, sobald ich da bin and Sobald ich da bin, rufe ich dich an make the same basic promise.

Während can also contrast two facts rather than describe literal simultaneity: Während Paul gern früh aufsteht, schläft Mia lieber lange (“Whereas Paul likes getting up early, Mia prefers sleeping late”). That contrastive use is common in formal comparison and belongs beyond the core temporal meaning.

Beyond the Basics / Advanced Use

The tense contrast with nachdem is useful, but German does not mechanically require a different tense in every sentence. If conjunction and context already show the sequence, especially in speech, matching tenses are common. In polished past narration, however, Nachdem sie den Bericht gelesen hatte, schrieb sie eine Antwort is clearer than using the simple past for both events.

Kaum dass and seitdem add further shades of temporal meaning. Kaum hatte ich die Tür geschlossen, klingelte das Telefon means “No sooner had I closed the door than the phone rang.” This inverted pattern is mainly literary or formal and is not needed for everyday B1 production.

Be careful with complex verb clusters. In ordinary subordinate clauses the finite verb is final, but perfect constructions with modal verbs can produce a special order called the substitute infinitive: …, weil er lange hat arbeiten müssen. This exception also occurs in temporal clauses, for example Nachdem er lange hatte arbeiten müssen, war er erschöpft. Recognize it as an advanced verb-order pattern rather than forcing the simple “finite verb always last” rule onto every multi-verb construction.

Finally, wenn may be temporal or conditional. Wenn der Bus kommt, steigen wir ein can mean “when” if the bus is expected, while wenn in Wenn du möchtest, bleiben wir hier means “if.” Usually the wider context, not a different structure, resolves the meaning.

Practice Tips

1. Build a timeline with two actions. Say it once with bevor and reverse the clause relationship with nachdem: Bevor ich arbeite, frühstücke ich → Nachdem ich gefrühstückt habe, arbeite ich.
2. Sort ten “when” sentences into three groups: one-time past (als), repeated events (immer wenn) and present/future (wenn). This trains the distinction English does not show explicitly.
3. Practise moving the same temporal clause: Ich gehe, sobald er kommt → Sobald er kommt, gehe ich. Check the comma, the final verb in the subordinate clause and the verb-first continuation in the main clause.

Related Concepts

• Prerequisite: Subordinate Clauses: wenn, ob — introduces subordinate-clause word order and the temporal or conditional uses of wenn.