bycj.net
当前位置:首页 >> nEED hAvE DonE 用法 >>

nEED hAvE DonE 用法

因为need要表示完成时的时候直接用need to be done就可以了

没有need have done这种说法,只有needn’t have done (没必要做某事但做了),表责备之意,这里的need属于情态动词。这种用法的结构是情态动词+完成时态。need有两种词性, 一个是做情态动词 ,一个是实义动词。 而need to do的need是实义动词...

虚拟语气,本该做而未做。

不同之处为: needn't have done表示某件事没必要做却已经做了。表示已经做了这件事。 didn't need to do指在过去某件事不必做,是否做了不清楚。 例句: needn't have done 1、We spent a hell of a lot of money that we needn't have spent. ...

didn't need to表示过去不需要做,但是也许做了,也许没做,不确定; needn't have done表示过去不需要做的事已经做了

need have done应该是表示本应该做某事却没有做, 他的否定形式needn't have done 就是表示本没有必要做某事而做了. 例如:You needn't have stayed.意思就是 你本没有必要留下来(实际却留下来了).

一、needn't have done的用法。 needn'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,因为就要下雨了。(你浪费了时间。) You needn't have...

是情态动词,表示对过去的虚拟。 例如: ----I spent the whole day finishing the composition yesterday. ----You needn't have finished it so hurriedly because it won't be due until next week. 译文: ---我昨天花了一整天完成这篇作文...

needn't have done和didn't need to do 的不同: 1、needn't have done 表示 本不需要做某事,但是已经做了 2、didn't need to do 表示 (过去)没有必要做某事,但是到底做没做某事,应该根据语境来分析。 一、needn't have done 1、这里的 nee...

网站首页 | 网站地图
All rights reserved Powered by www.bycj.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com