Questions & Answers about Man darf im Schwimmbad nicht rennen, denn es ist gefährlich.
Why do we use the verb form darf with the word man?
The word man is an impersonal pronoun meaning one, people, or you in a general sense. Grammatically, it always acts as a third-person singular subject, just like er, sie, or es. Because of this, the modal verb dürfen (to be allowed to) takes its third-person singular form, which is darf.
Why is the verb rennen at the very end of the first clause?
This is the standard German word order when using a modal verb. The conjugated modal verb darf takes the normal second position in the sentence, while the main action verb rennen (to run) gets pushed all the way to the end of the clause in its original infinitive form.
Why is im used here instead of just in?
im is a handy contraction of the preposition in and the dative article dem. We use the dative case here because running happens inside a fixed location. If the sentence described movement toward a new destination, like running into the pool building from the outside, it would use the accusative case (in das or ins).
Why does the verb ist stay in the second position after denn? Doesn't the word for because usually push the verb to the end?