not until在句首的主谓倒装句练习

Not until three years ago____ to work outside.

A. he began

B. he begins

C. began he

D. did he begin

参考译文：直到三年前他才开始外出工作。

������解析：本题是语序结构题。not放在句首，否定until状语从句，此时主句要求倒装语序。应将助动词did提前。

【语法链接】为了强调或平衡句子结构，英语中经常采用倒装句。倒装分为全部倒装和部分倒装。全部倒装指句子的谓语动词全部位于主语之前。部分倒装是指谓语动词的一部分如助动词或者情态动词置于主语之前。如果没有助动词或情态动词，需要根据时态添加do,does,did等，并将其置于主语之前。

具有(半)否定意义的词或短语位于句首时，用部分倒装。如：seldom, rarely, not, never, by no means, in no time, hardly...when, no sooner...than, not only...but also等。

如： Not only does he do well in his lessons, but also he often helps others with their lessons.