posted by anon .
The underlined words (I put them in parantheses) are an example of a(n) ___________.
(When the earth, moon, and sun are in line), an eclipse occurs.
A. adverbial clause
B. adjectival clause
C. noun clause
My answer is C.
No, it'd be a noun clause if the entire clause served as the subject of the sentence ... or an object. But it doesn't, since we can see that "eclipse" is the subject here.
It's either A or B -- so, is it describing an action (then it's adverbial) or is it describing something (then it's adjectival)??