Breakdown of Ich merke, dass du müde bist.
ich
I
sein
to be
du
you (informal singular)
müde
tired
dass
that
merken
to realise, to sense
Questions & Answers about Ich merke, dass du müde bist.
Why is bist at the very end of the sentence instead of after du?
The word dass (that) is a subordinating conjunction. This means it introduces a dependent part of the sentence and forces the conjugated verb (bist) to move to the very end. In English we say 'that you are tired', but German word order makes it 'that you tired are'.
Why is there a comma before dass?
In German, you must always place a comma between a main clause (Ich merke) and a dependent clause (the part starting with dass). English often skips this comma, but in German it is a strict rule.
Are dass and das the same word?
They sound the same, but they have different jobs and spellings. dass with a double 's' is the conjunction 'that' used to connect phrases, like in this sentence. das with one 's' is the neutral article 'the' or a pronoun pointing to a specific thing.
What is the difference between merken and wissen here?
If you say Ich weiß, dass..., it means 'I know that...'. Using merken means 'to notice' or 'to realize'. In this sentence, it shows you are actively observing the person's behavior right now and realizing they are tired.
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