Not until the meeting was over ____ that he had made a mistake in his speechA he realized B did he realize C he has realized D has he realized为什么选b?
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Not until the meeting was over ____ that he had made a mistake in his speech
A he realized B did he realize C he has realized D has he realized
为什么选b?
因为not until开头
句子要用倒装
排除A C
D的话因为后面用had made
所以整个句子要用过去式
所以选B
not until 引导的从句主句要用倒装,所以排除A.C而错误已经犯了,是在意识到之前就犯的,所以意识是用过去时,而犯错是用过去的过去,懂了吗
首先not until 在句首,句子要半倒装,其次,整个句子是过去时,所以用一般过去时表示过去发生的事情。
not until 放在句首,主谓要部分倒装。
类似情况是,否定词像 no,never,hardly ,scarcely ,seldom 等放在句首时,主谓用部分倒装。
如:Hardly had he put down the receiver when the phone rang again .
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