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It was not until 1920 regular radio broadcast began.

时间:2022-09-09 21:06:26

It was not until 1920      regular radio broadcast began.

A.while

B.which

C.that

D.since

答案及解析: C

解析:

众所周知,当时间状语由until/till引出时,如果谓语动词为非延续性动词,则要用否定式,表示“直到……才……”。本句的正常结构应为:Regular radio broadcast didn’t begin until 1920.如果强调本句的时间状语,则要把not和until...一起放在句首,可以构成:Not until 1920 did regular radio broadcast begin.(注意表示否定意义的副词位于句首,要倒装),如果使用强调结构,则可构成:It was not until 1920 that regular radio broadcast began.

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