Question

英语题求解析

Only when they met twenty years after graduation ____________ how greatly they had changed.
A. did she realize B. that she realized
C. has she realized D. then she realized
这道题我感觉是选B，但参考答案给的是A,为什么？求讲解，谢谢！

Answer 1

应该选A ,此处Only后是一个倒装结构，同例，Only by studying harder can you make much progress.

Answer 2

正解是 A
only + 状语when they met twenty years after graduation ， 要用倒装句。

Only in this way can we work out the problem .
Only when he came back did I go to bed .

Answer 3

选A相信我^_^，这里开到的是一个倒装句的用法，only在句首，这句句子需要部分倒装

Answer 4

倒装啊
did 强调词提前 后跟动词原形

Answer 5

因为这个是部分倒装句，所以后面助动词要提前，记着把~