一條路。 may not/mightn't have done 表“可能不” 之前我們講到過(guò) can't/couldn't have done 是表示“不可能”，而 may not/mightn't have done 則是表示“可have能不”，要注意區(qū)分哦： He can't have been at the meeting, he's on a business trip this week. 他不可能有出席會(huì)議，他這周出公差。 We couldn't have done it without you. 沒(méi)有你我們肯定完成不了。 They may not have known it beforehand. 他們事先可能不知道這事兒。 They mightn't have regarded me as their friend. 他們可能沒(méi)有把我當(dāng)作朋友看待。

have to”是一個(gè)多功能的英語(yǔ)短語(yǔ)，其基本含義是“必須”或“不得不”，但根據(jù)上下文的不同，可以有多種用法和含義?！癶ave

? You?have?to?believe?in?yourself.?That?is?the?secret?of?success.——Chaplin 人必須相信自己，那是你成功的秘訣?！縿e林 ? 一、關(guān)于have，你應(yīng)該知道的用法有 aux.v. 1.(加過(guò)去分詞，構(gòu)成完成時(shí))已經(jīng)，曾經(jīng) A number of variations of the apparatus described here have been employed successfully. 這種裝置的許多改型都have?to?believe?in?yourself.?That?is?the?secret?of?success.——Chaplin 人必須相信自己，那是你成功的秘訣?！縿e林 ? 一、關(guān)于have，你應(yīng)該知道的用法曾經(jīng)用得很成功。 2.用于虛擬語(yǔ)氣 n. 1.（常作haves）富人，富國(guó)，擁有者 The gap

? You?have?to?believe?in?yourself.?That?is?the?secret?of?success.——Chaplin 人必須相信自己，那是你成功的秘訣?！縿e林 ? 一、關(guān)于have，你應(yīng)該知道的用法有 aux.v. 1.(加過(guò)去分詞，構(gòu)成完成時(shí))已經(jīng)，曾經(jīng) A number of variations of the apparatus described here have been employed successfully. 這種裝置的許多改型都have?to?believe?in?yourself.?That?is?the?secret?of?success.——Chaplin 人必須相信自己，那是你成功的秘訣。——卓別林 ? 一、關(guān)于have，你應(yīng)該知道的用法曾經(jīng)用得很成功。 2.用于虛擬語(yǔ)氣 n. 1.（常作haves）富人，富國(guó)，擁有者 The gap

用法

have done can have干了？（表懷疑） He couldn't have checked out so early. 他不可能這么早就離開(kāi)了。（表不可能） 注意：can't have done 的語(yǔ)氣比 couldn't have done 要強(qiáng)一些。例如： He can't have been to that town. 他根本不可能去過(guò)那座城市。（語(yǔ)氣略強(qiáng)） The measurement couldn't have been wrong. 測(cè)量不可能出錯(cuò)了吧。（語(yǔ)氣稍弱）

什么事。 7.He must have done sometime. Certainly he had always been jealous of him as a child. 有時(shí)他肯定愛(ài)，當(dāng)然他總是忌妒弟弟，像一個(gè)小孩子。 二、can/could have done sth.本來(lái)能夠做某事，而實(shí)際上未做 1.But we could have done it all so much better. 但是，我們本可以把這一切做得更好。 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. 比如你完成了一項(xiàng)出色的工作，你或許告訴你自己它不夠好，任何人都可以做的像你一樣好。 三、can't/couldn't have done sth.不可能做過(guò)某事 1.I could't have done it without you. 若是沒(méi)有你，我不可能做到那樣的。 2.We could't have done it without you. 沒(méi)有你have done的結(jié)構(gòu)和用法有以下幾種： 一、must have我們辦不成這事。 四、ought to/should have done sth.過(guò)去本應(yīng)該做某事而實(shí)際上并沒(méi)有做 1.You should have done it when you first saw them blooming this spring. 你應(yīng)該在今年春天第一次看到它們盛開(kāi)的時(shí)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. 甚至你在一個(gè)星期前的就提早完成了一件事或者忽略了一個(gè)小細(xì)節(jié)。

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