Question

the teacher asked the students( ).a.whether they had ever seen the film avatar two months ago

b;that they had ever seen the film avatar two months before
c;if they had erer seen the film avatar two monrhs before
d;whether they have ever seen the film avarar two month before
我要详细解答

Answer 1

C
if they had ever seen the film Avatar two months before.

第一，这是个过去的过去的时态，因此用过去完成时。
第二，完成时不与表示时间的点的词ago连用，而改为表示时间段的词before