have done,i did用法- Yahoo!奇摩知識+ 2009年6月9日 ... 1.I have done(present perfect)、I did(simple past) 的用法+舉例*可以解釋詳盡一點 嗎？謝謝2.順序復詞的用法+舉例(first,then,next,after then ...
【求助】 时态问题- - have done 和had done 用法和区别_英语吧_百度 ... 比如说i had finished my homework before i watched TV（我在看电视之前就把作业 完成了）过去完成时一般有过去的过去的语境，watched tv是过去，在watched tv ...
have done 和have been done 的区别及用法！要讲得简单易懂！不要用那 ... 首先举例： 1.I have done this thing.我已经做了这件事了。 2.The problems have been done.这些问题已经被解决了。 所以最直接的区别就是主动与被动的 ...
英语语法问题could / should have done用法_百度知道 must have done 对过去的动作的推测。 如; You must have seen him yesterday. 你 昨天一定看到他了。 must do 对现在的动作的推测。 如：You must know ...
have been done和have done用法有什么区别？ _外语_英语_天涯问答 没有这种用法这个其实就是完成式HAVE DONE,TO DO是目的状语和前面没有关系 。 ... 前者是被动语态现在完成时，后者为主动语态现在完成时.
我分不清has done had done has been done had been done 的意思 ... 2012年4月29日 ... 我分不清has done had done has been done had been done 的意思和用法. 15 ... have\has\had been done 是现在/ 过去完成时的被动语态。
should/could/must/might have done用法? - 360Doc个人图书馆 2011年8月11日 ... should have done表示本应做而没做could have done表示本可以做而没做must have done表示对过去事实的肯定判断，语气较重，即很肯定might ...
