dass Clauses
Report what you think, know, hope and say with dass-clauses: the same verb-final order you learned with weil, plus the classic spelling question of dass versus das.
Saying what you think, know and hope
A huge part of everyday talk is not describing the world directly but reporting your own head: I think that..., I know that..., I hope that... German builds all of these with a dass-clause. The pattern is a short opener — Ich glaube, Ich denke, Ich weiß, Ich hoffe, Ich finde, Sie sagt — followed by a comma, dass and the reported statement.
English often drops the word "that": I think he is coming today. At A2, German keeps dass in place, and you should too. Ich glaube, dass er heute kommt. The comma before dass is not optional; it always marks the border between the opener and the clause.
The most useful openers to memorise as fixed chunks: Ich glaube, dass ... (belief), Ich weiß, dass ... (knowledge), Ich hoffe, dass ... (hope), Ich finde, dass ... (opinion) and Er sagt, dass ... (reporting someone else).
Ich glaube, dass er heute kommt.
I think that he is coming today.
Ich hoffe, dass das Wetter gut bleibt.
I hope that the weather stays good.
Sie sagt, dass der Kurs voll ist.
She says that the course is full.
Verb-final, just like weil
The grammar of the dass-clause holds no surprises if you have digested the weil lesson: dass is a subordinating conjunction, so the conjugated verb moves to the end of its clause. Ich weiß, dass du viel arbeiten musst — the modal musst closes the clause, after the infinitive arbeiten.
The Perfekt behaves as it did with weil: participle first, helper verb last. Er hat gesagt, dass er den Schlüssel gefunden hat. Do not let the two hat forms confuse you — the first belongs to the opener, the second closes the dass-clause.
In fact, weil and dass are the same machine with different labels: comma, conjunction, everything else, verb at the end. Every subordinate clause you learn from now on — and two more are coming in the next lessons — reuses this exact template.
Ich weiß, dass du viel arbeiten musst.
I know that you have to work a lot.
The modal is the conjugated verb, so it stands at the very end.
Er hat gesagt, dass er den Schlüssel gefunden hat.
He said that he found the key.
In the Perfekt, the helper verb closes the dass-clause, after the participle.
Wir hoffen, dass ihr Zeit habt.
We hope that you (plural) have time.
dass or das?
dass and das sound identical, and mixing them up in writing is a mistake even native speakers make. The jobs are cleanly separated. das with one s is either the article of a neuter noun (das Haus, das Essen) or a pronoun that points at something (Das stimmt — that is right). dass with double s does only one thing: it introduces a clause after a comma. It never stands before a noun and never points at anything.
A quick test: if you can replace the word with dieses (this) or es and the sentence still works, you need das. Das ist gut → Es ist gut — works, so das. In Ich finde, dass das Essen lecker war no replacement works for the first word after the comma — that one is dass.
Both words can share one sentence, as that last example shows: the linker is dass, the article before Essen is das. Reading such sentences aloud and naming each word's job is a surprisingly effective way to make the difference stick.
Das Essen war lecker.
The food was delicious.
das as the article of a neuter noun.
Ich finde, dass das Essen lecker war.
I think that the food was delicious.
Both words in one sentence — the linker is dass, the article is das.
Das stimmt.
That is right.
das as a pronoun pointing at a statement.
Opinions at work and in everyday life
dass-clauses are how you disagree politely. A bare Die Wohnung ist zu teuer can sound blunt; Ich finde, dass die Wohnung zu teuer ist marks the statement as your opinion and leaves room for discussion. In meetings, reviews and negotiations, German speakers soften almost every judgement this way.
The pattern Es ist wichtig, dass ... (it is important that ...) and its siblings Es ist gut, dass ... and Es ist schade, dass ... are just as useful. Landlords, doctors and course leaders use them constantly for instructions and comments: Es ist wichtig, dass Sie pünktlich sind.
Finally, dass-clauses let you pass on what other people said — the doctor, the boss, the neighbour: Der Arzt hat gesagt, dass ich viel Wasser trinken soll. Openers plus dass plus verb at the end: with that one template you can report an entire conversation.
Ich finde, dass die Wohnung zu teuer ist.
I think that the flat is too expensive.
Es ist wichtig, dass Sie pünktlich sind.
It is important that you are on time.
Ich denke, dass wir den Bus nehmen können.
I think that we can take the bus.
Der Arzt hat gesagt, dass ich viel Wasser trinken soll.
The doctor said that I should drink a lot of water.
Check yourself
Quick checks on this lesson. Get at least three quarters right to mark it as completed.
Fill in the gap
Ich glaube, er morgen kommt.
Hint: The linking word with double s — it only introduces a clause.
Practise what you learned