2. 外语
  3. 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.

admin2014-07-20  64
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”。
转载请注明原文地址:https://kaotiyun.com/show/sXTK777K
0

专业英语四级

相关试题推荐
随机试题
最新回复(0)