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文件名称:语法09节课讲义-考研英语精讲核心语法讲义薛老师04.pptx
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考研英语核心语法

--有“法”可依

主讲人:薛冰老师(SnowIce)

虚拟语气:

1.用于状语从句中

2.用于主语从句中

3.用于宾语从句中

4.用于表语从句和同位语从句中

用于状从中(多见于if从句):

1.与现在相反:

从句:if+主语+did/were,

主句:主语+would(could,should,might)+do。

2.与过去相反:

从句:if+主语+haddone/hadbeen,

主句:主语+would(could,should,might)+have

done(been)。

主句:主语+would(could,should,might)+do。

从句:if+主语+wereto(should)+do,

3.与将来相反:

用于主从中:

Itisnecessary/important/crucial/criticalthatsb/sth+(should)do…

例:

Itisnecessarythatyou(should)putonasuittoattendherwedding.

Itisimportantthathesubmithisplanbeforethedeadline.

用于宾从中:

表命令、建议和要求的动词一般要接

虚拟语气,即V+sb(should)do.advise,agree,demand,insist,command,decide,ensure,order,instruct,propose,recommend,require,request,suggest,urge等。

?注:

?当suggest表示“暗示,表明”之意,suggest后的宾语从句不使用虚拟语气,应使用陈述语气。如:

?Thesmileonhisfacesuggestedthathewassatisfiedwithourwork.

用于表语从句和同位语从句中:

在suggestion,proposal,order,plan,idea,request,advice等名词后的表语从句和同位语从句中要用虚拟语气,其构成是“should+动词原形”,should可以省略。

?

?例:

?Myideaisthatwe(should)thinkitoverbeforeacceptingit.

?Weallagreedtohissuggestionthatshedeserveareward.

wouldrather(wouldassoon,wouldsooner)

sbdidsth.

特殊结构:

Itis(about/high)timesb/sthdidsth.

虚拟语气中if状语从句的倒装:

如果虚拟语气的if状语从句中有助动词had、

were或情态动词should、could、might等,则可以去掉if,将had、were或should等置于句首进行倒装。

例:

Ifhehadnotbeenpromoted,hewouldneverhaveremainedwiththecompany.…….

IfIcouldwinthelottery,Iwouldbuya

car.…….

IfIhadenoughmoney,Iwouldhelpher.

→HadIenoughmoney,Iwouldhelpher.(x)

Ifyouwereto/shouldchangeyourmind,

noonewouldblameyou.…….

AtBostonCollege,forexample,youwouldhavetocompleteanextrayearwereyoutoswitchtothenursingschoolfromanotherdepartment.

(2017.Text3)

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