Not until Peter got home ______ that he had lost his keys.

题目

Not until Peter got home ______ that he had lost his keys.
A.did he realize
B.he realized
C.had he realized
D.he had realized
求区分

答案

答案是A当Not until位于句首时,句子要倒装.其结构为:Not until+从句/表时间的词+助动词+(主句)主语+谓语+.如: ①Not until the teacher came in did the students stop talking.直到老师进来学生们才停止讲话. ②Not...