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You_____all those calculations! We have a computer to do that sort of thing.
You_____all those calculations! We have a computer to do that sort of thing.
admin
2021-04-13
76
问题
You_____all those calculations! We have a computer to do that sort of thing.
选项
A、needn’t have done
B、must not have done
C、shouldn’t have done
D、can not have done
答案
A
解析
本句是情态动词need后接完成时的用法。need作情态动词用时,通常用于否定句或疑问句中。 “needn’t+have+过去分词”表示“过去做了某事,但事实上没有必要做”。
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0
专业英语四级
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