I know that
I am curious what would happen
is a perfectly valid usage. What I don't understand is why there is no preposition to connect "curious" and "what would happen", which is acting like a noun clause. It seems to me that the sentence is not grammatical and needs "about" between curious and what would happen. Why is it an acceptable usage? Is there a grammar rule behind it?
Best Answer
Both forms are idiomatic. With the version without the preposition, curious is treated as if it means "desiring to know".