有没有didn't have to do ,didn't need to do

来源：学生作业帮编辑：大师作文网作业帮分类：英语作业时间：2024/09/20 19:56:58

有没有didn't have to do ,didn't need to do
you ________such a long composition .the teacher only asked for 200 words.
A needn't have written
B didn't have to write
C didn't need to write
我知道a肯定对但不明白BC怎么不对,也有这两种表达的吧?

A,needn't have done“本没有必要做某事”指的是那件事你已经做过了.
有B,C这两种用法,都表示“没有必要做某事”但没有包含“已经做过了”这一含义.

有没有didn't have to do ,didn't need to do needn't have done和didn't need to do 有什么不同? didn't need to do 与needn't have done 的区别和相同点 Didn't need to do还有 needn't have done的区别 didn`t need to do 和need not to do区别同义句：We didn't have anything to do yesterday. i didn't mean to do 急关于didn't have to We didn't have enough people to do the work,so we couldn't f I didn‘t promise to do 和I promised not to do 有什么不一样用needn't to或didn't have to或didn't need填空：Then the frogs thou used not do和didn't used to do有什么区别