mustnt have done,网络释义的三个例子

mustnt have done,网络释义的三个例子

一、cant have done 是must have done 对过去推断的否定形式。二、具体说明如下：情态动词must （必定、一定）”表示推断或指具有较大的可能性时，其否定式是camustnthavedone什么意思mustnthavedone什么意思mustn't have done可意为“本不必”，即已经做了某事，⽽实际上不必要。⾸先have one表⽰已经做过，这点就不⽤谈了。can't h

5. What would you have done last night, if you to write your homework. A. hadnt B. havent had C. didnt have D. hadnt had 6. ---Did you catch the plan网络过去不必做但是做了；原本不必做但是做了网络释义

don't have tostrong obligation (possibly from outside) Children have to go to school. (sometimes 'have got to')no obligation I don't have to work on Sundays. You a little bit more.-author-datemust-have-done-的反意疑问句答疑must-have-done-的反意疑问句答疑情态动词+动词完成时，即情态动词+have+done.表示对过去的行为

1、情态动词+have_done的用法75157 “情态动词+have done”的用法情态动词+have_done的用法75157 一、一、“must have done”一定做过某事一定做过某事表1、情态动词havedone的用法情态动词havedone的用法编辑整理：尊敬的读者朋友们：这里是精品文档编辑中心，本文档内容是由我和我的同事精心编辑整理后发布的，发布之前我们对文中内容进

A.mustnt have done B.didnt need to do C.neednt have done D.cant have done 30. I ___ up early this morning ,so I stayed in bed until 9 oclock a.m . A.neednt have got B.dineedn't have done意指没必要干某件事但多余地干了，即浪费了时间：you needn't have watered the flowers , for it is going to rain . 你本不必浇那些花，因为