Building bigger sentences
Lesson 14 introduced four subordinating conjunctions (weil, dass, wenn, ob) that send the verb to the end of their clause. Now we extend that toolkit. The same word-order rule applies to a longer list — als (when, one-time past), obwohl (although), damit (so that), bevor (before), nachdem (after), während (while), seitdem (since), falls (in case). Memorize this group as the 'verb-final club' and the rest is mechanical: subject — middle stuff — verb at the very end.
The verb-final club
All of these subordinating conjunctions push the conjugated verb to the very end of their own clause: weil, dass, wenn (if/when, repeated/present), ob (whether), als (when, one-time past event), obwohl (although), damit (so that), bevor (before), nachdem (after), während (while), seitdem (since), falls (in case). What they share: they introduce a clause that depends on a main clause. Ich gehe nach Hause, weil ich müde bin. Ich rufe dich an, bevor ich komme. Ich bleibe zu Hause, obwohl die Sonne scheint. Same pattern, different conjunction.
wenn vs als — the past-time split
Both translate as 'when' — they are NOT interchangeable. wenn = repeated event, present, or future ('whenever / when / if'). als = a single one-off event in the past. Wenn ich Zeit habe, lerne ich Deutsch. = When/whenever I have time, I study German. Als ich klein war, wohnte ich in Berlin. = When I was little, I lived in Berlin. (One stretch of past time → als.) A useful test: if you could say 'whenever' in English, use wenn; if you mean 'on that one specific past occasion', use als.
Subordinate clause first — verb stays in slot 2
When the subordinate clause comes FIRST, the whole clause counts as slot 1 of the main sentence. So the main verb still sits in 'slot 2' — meaning right after the comma. Weil ich müde bin, gehe ich nach Hause. Read it: subordinate clause | comma | VERB | subject. The subject ich comes AFTER the verb here. This is the famous 'verb-verb collision': the subordinate clause ends with a verb (bin), then the main clause starts with a verb (gehe). It looks weird, it's correct: …müde bin, gehe ich…
Modals + Perfekt in subordinate clauses
When a subordinate clause contains a modal verb plus an infinitive, or a Perfekt with a participle plus a helper, the helper/modal — the conjugated verb — goes to the very end. Ich glaube, dass Tom morgen kommen kann. Order: subject Tom — adverb morgen — infinitive kommen — modal kann at the very end. With Perfekt: Ich weiß, dass er nach Berlin gefahren ist. Order: subject — past participle gefahren — helper ist at the very end. The conjugated verb is always last.
Common pairs to learn
bevor / nachdem are temporal — bevor = before, nachdem = after. Ich rufe dich an, bevor ich komme. Nachdem wir gegessen haben, gehen wir spazieren. damit = 'so that' (purpose): Ich lerne Deutsch, damit ich in Berlin arbeiten kann. obwohl = 'although' (contrast): Ich gehe spazieren, obwohl es regnet. falls = 'in case': Ich nehme den Schirm, falls es regnet. während = 'while' (simultaneous): Während ich koche, liest Tom ein Buch. All of them — verb at the end of the clause they introduce.
