Breakdown of Er darf nicht so übertreiben, denn er ist kein Held.
sein
to be
er
he
kein
no, not any
nicht
not
Questions & Answers about Er darf nicht so übertreiben, denn er ist kein Held.
Why does darf nicht translate to "must not"?
While the modal verb dürfen generally means "to be allowed to" or "may", negating it with nicht expresses a strict prohibition: "must not" or "not allowed to". Watch out for these false friends: darf nicht means "must not", while muss nicht means "does not have to"!
Why is the verb ist in the second position after denn? Doesn't "because" push the verb to the end?
It depends on which word you use for "because". The word denn is a coordinating conjunction, which means it occupies "position zero" and leaves the normal subject-verb word order intact. If the sentence had used weil instead, the verb would be kicked to the very end of the clause: ... weil er kein Held ist.
Since this lesson is about "as if" comparisons (als ob), why aren't we using the Konjunktiv II here?
Because this clause is stating a plain fact, so it uses the normal indicative mood. It serves as the reality check to an imaginary situation. If you wanted to say the imaginary part—"as if he were a hero"—you would use the Konjunktiv II: ... als ob er ein Held wäre.
Why do we use kein here instead of nicht to say "no hero"?