Breakdown of Denkst du an die Hitze, weil du so frierst?
du
you (informal singular)
so
so, such (intensifier)
weil
because (subordinating)
denken an
to think about
Questions & Answers about Denkst du an die Hitze, weil du so frierst?
Why do we use an to mean "about" in this sentence?
The verb denken (to think) naturally pairs with the preposition an to mean "to think of" or "to think about." Prepositions rarely translate perfectly between English and German, so it is best to learn the combination denken an as a set phrase.
Why does an take the accusative case (die Hitze) here instead of the dative?
When an is used as a fixed preposition with the verb denken, it always requires the accusative case. Because Hitze (heat) is a feminine noun, its accusative article remains die.
Why is the verb frierst at the very end of the sentence?
The word weil (because) is a subordinating conjunction. It introduces a dependent clause and always pushes the conjugated verb (frierst) to the very end. Notice how this is different from the adverb trotzdem from this lesson, which acts as Position 1 and keeps the verb in Position 2 (for example: Trotzdem frierst du).
Can I use frieren to say that a liquid like water is freezing?
No, frieren is specifically used for people or animals who feel cold, like shivering. If you are talking about water literally turning into ice, you would use a different verb, such as gefrieren.