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      在雅思阅览中，动词不定式是一个很难了解的当地，尤其是在关于文章的中心内容的时分。现在小编就为我们具体解析一下雅思阅览中的动词不定式，期望对我们的阅览了解有所协助。

　　1)雅思阅览动词不定式的构成：(以动词“do”为例)

　　自动态：一般式"to do";完结式"to have done";进行式"to be doing";完结进行式“to have been doing”

　　被动态：一般式"to be done";完结式“ to have been done"

　　否定式：not+不定式

　　2)雅思阅览不定式的时态：

　　①不定式的一般式表明的动作与主句谓语动词表明的动作同时发作或之后发作。

　　He seems to know her address.(：=It seems that he knows her address.)

　　I hope to see you again.(=I hope that I’11 see you again.)

　　②不定式的进行体表明的动作正在进行，与主句谓语动词表明的动作同时发作。其用法首要有以下几种状况：

　　a 常用在"appear，happen，pretend，seem，hope，promise"之后。

　　She pretended to be listening attentively.

　　Tom appeared to be living in this area.

　　I hope to be earning my living in a year’s time.(I hope 1 will/would be earning my living)

　　I promised to be waiting at the door when he came out.

　　b 常用在"believe，consider，suppose，think，know，report，say，understand"等动词的被动式之后。

　　He is thought/known/believed/said/supposed to be living in this area = People think/know/ believe/ say/suppose that she is living abroad.[据以为(据知，据信，听说，据猜想)她住在国外。]

　　[注]“be supposed to”一般含有“应该”意思，表明必定的职责和责任，在雅思阅览中呈现的许多。

　　You are supposed to know how to use a computer=You should know how to use a computer.

　　You are supposed to have been studying=You should have been studying.

　　Students are not supposed to cook in their dormitory=Students shouldn’t cook in their dormitory.

      3)雅思阅览不定式的表达主题：

　　①用于表达发作在主句谓语动词之前的动作或状态，也能够表达预计在将来某一时间之前完结的动作或状态。

　　I am sorry to have given you so much trouble.(=I am sorry that I have given you so much trouble.)

　　We’re leaving at five o’clock in the morning，and hope to have done most of the journey by lunchtime.

　　②不定式完结进行体首要用于“appear，seem，happen，pretend"等之后，也可用于"believe，know，report，say，understand"等动词的被动式之后。

　　He appears to have been waiting for a long time.

　　He is believed to have been waiting for a message.

　　[注]不定式的完结进行式与不定式的完结式略有不同，试比较：

　　He seems to have eaten the apples.(苹果已被吃光。)

　　He seems to have been eating the apples.(苹果没有彻底吃光。)

　　③不定式的完结体还能够表达本该发作却未发作的工作常带这种不定式的谓语动词有：“pretend，intend， appear，seem，should like，expect"等。

　　I meant to have telephoned you，but I forgot.

　　4)雅思阅览不定式的语态：

　　①在不定式之前能找到不定式所表达的动作的执行者时，此不定式用自动态;反之则用被动态。被动态在雅思阅览中呈现的时分都是比较难以了解的时分。试比较：

　　We found the article hard to understand.(“understand”的执行者是“we”.)

　　He is reading the article to be published tomorrow.(“punish"之前没有执行者。)

　　②有时动作执行者(for sb.)不呈现，也要用自动态。It is easy to do.(“It”既是主语，又是“do”的宾语，“to do”前省掉了“for sb.”)

　　相似的还有：It is impossible to get there.

　　③在"there be"结构中，不定式既能够用自动态，又能够用被动态。

　　There is no time to lose/to be lost.(时间急迫不能耽误了。前后含义无不同。)

　　There b nothing to do/to be done.(没事可干/无能为力。前后含义有不同。)

　　④习惯上用“to let(租借)”，“to blame(责怪)”的自动方式表明被动含义。

　　Nobody was to blame for the accident.(这场事端不能怪任何人。)

　　Tom asked her if she had any rooms to let.(汤姆问她是否有房要租借。)

　　在雅思阅览中，动词不定式的呈现一般都会伴随着考题，所以我们能够在平常的操练中就予以重视，只要在平常的时分熟悉了，才能在雅思阅览考试的时分顺畅的了解。