一条路。 may not/mightn't have done 表“可能不” 之前我们讲到过 can't/couldn't have done 是表示“不可能”，而 may not/mightn't have done 则是表示“可have能不”，要注意区分哦： He can't have been at the meeting, he's on a business trip this week. 他不可能有出席会议，他这周出公差。 We couldn't have done it without you. 没有你我们肯定完成不了。 They may not have known it beforehand. 他们事先可能不知道这事儿。 They mightn't have regarded me as their friend. 他们可能没有把我当作朋友看待。

  You have to believe in yourself. That is the secret of success.——Chaplin 人必须相信自己，那是你成功的秘诀。——卓别林   一、关于have，你应该知道的用法有 aux.v. 1.(加过去分词，构成完成时)已经，曾经 A number of variations of the apparatus described here have been employed successfully. 这种装置的许多改型都have to believe in yourself. That is the secret of success.——Chaplin 人必须相信自己，那是你成功的秘诀。——卓别林   一、关于have，你应该知道的用法曾经用得很成功。 2.用于虚拟语气 n. 1.（常作haves）富人，富国，拥有者 The gap

  You have to believe in yourself. That is the secret of success.——Chaplin 人必须相信自己，那是你成功的秘诀。——卓别林   一、关于have，你应该知道的用法有 aux.v. 1.(加过去分词，构成完成时)已经，曾经 A number of variations of the apparatus described here have been employed successfully. 这种装置的许多改型都have to believe in yourself. That is the secret of success.——Chaplin 人必须相信自己，那是你成功的秘诀。——卓别林   一、关于have，你应该知道的用法曾经用得很成功。 2.用于虚拟语气 n. 1.（常作haves）富人，富国，拥有者 The gap

用法

have done can have干了？（表怀疑） He couldn't have checked out so early. 他不可能这么早就离开了。（表不可能） 注意：can't have done 的语气比 couldn't have done 要强一些。例如： He can't have been to that town. 他根本不可能去过那座城市。（语气略强） The measurement couldn't have been wrong. 测量不可能出错了吧。（语气稍弱）

什么事。 7.He must have done sometime. Certainly he had always been jealous of him as a child. 有时他肯定爱，当然他总是忌妒弟弟，像一个小孩子。 二、can/could have done sth.本来能够做某事，而实际上未做 1.But we could have done it all so much better. 但是，我们本可以把这一切做得更好。 2.If you do a good job, you may tell yourself that it wasn’t good enough or that anyone could have done as well. 比如你完成了一项出色的工作，你或许告诉你自己它不够好，任何人都可以做的像你一样好。 三、can't/couldn't have done sth.不可能做过某事 1.I could't have done it without you. 若是没有你，我不可能做到那样的。 2.We could't have done it without you. 没有你have done的结构和用法有以下几种： 一、must have我们办不成这事。 四、ought to/should have done sth.过去本应该做某事而实际上并没有做 1.You should have done it when you first saw them blooming this spring. 你应该在今年春天第一次看到它们盛开的时候就挖一些的。 2.Even if it’s something you should have done earlier in the week or missed a detail on. 甚至你在一个星期前的就提早完成了一件事或者忽略了一个小细节。

have

have

看他叔叔了。  4.She has gone to the cinema with her boyfriend.  她与男朋友看电影去了。 5.Wherever can he have gone to?  他究竟会到哪儿去了呢？ 6.We have gone to the rest room after dinner.  饭后我们都到休息室去了。 7.He needn't have gone to hospital, but he went just to reassure himself.  他本不必去医院的，去了只是想让自己放心点。（英国英语意为“他做了不需要做的事”） 8.Claire's car wasn't there, so she must have gone to her mother's.  克莱尔的汽车不在那儿，想必她是去她母亲家了。 9.I have gone to premieres in my dreams but I never thought I'd do it for real.  我在梦中多次参加过首演，但我从没想到我会真的参加。 10.Much as I would love to have gone to the party yesterday, I didn't because I had to prepare for the interview.  尽管我非have been to 和have been to have gone to的区别是前者表示去过某地，通常可与表示次数的状语连用；后者表示到某地去了，强调说话的当时去某地的人不在场。 have常想参加昨晚的聚会，但我没去，因为我要为面试做准备。 11.I would have gone to my cousin's birthday party last night, but I was not available.  昨天晚上我本想去参加我表哥的生日聚会，但我没空。

have