考点名词性从句.ppt
名词性从句,名词性从句包括主语从句、宾语从句、表语从句和同位语从句.名词性从句一向是NMET中的重要考点.通过对近几年高考试题的分析,我们可以看出NMET名词性从句考点主要有以下六个方面:考点之一:考查名词性从句中that与what的区别 考例:_ we cant get seems better than _ we have.A.What;what B.What;that C.That;that D.That;what 分析:(注:划线的选项为最佳答案,下同.)在名词性从句中that与what的区别是:that在名词性从句中不作句子成分,只起连接作用;而what在名词性从句中不仅起连接作用,而且作句子成分.句子的意思是:我们不能得到的似乎比我们已经拥有的要好.此题考查了两个名词性从句:主语从句和宾语从句,what在这两个名词性从句中都作宾语.,考点之二:考查名词性从句中的it作形式主语或形式宾语 考例1:_ is a fact that English is being accepted as an international language.A.There B.This C.That D.It 分析:在这种名词性从句中为了保持句子的平衡,往往用先行词it作形式主语或形式宾语,而把真正的主语或宾语放到后面,尤其是that引导的主语从句往往用先行词it作形式主语.此句也可以改写为:That English is being accepted as an international language is a fact.考例2:I hate _ when people talk with their mouths full.A.it B.that C.this D.them 分析:此题考查的是用先行词it作形式宾语,而把真正的宾语从句放到后面.其他几个词均不能作形式宾语.,考点之三:考查名词性从句的语序 考例:The photographs will show you _.A.what does our village look like B.what our village looks like C.how does our village look like D.how our village looks like,分析:在名词性从句中,除了关联词要提到句首之外,一律要用陈述句语序。当关联词含疑问意义时,有的学生就会受习惯影响错误地使用疑问句语序。克服这种错误的关键是要找准从句中的主语和谓语。本题句子的意思是:这些照片会告诉你我们村子是什么样。本题中根据引导词what要作介词like的宾语,而副词how不能作介词like的宾语,所以首先排除C、D,而A项是疑问句语序,故只能选B。,考点之四:考查名词性从句中的whether,if以及that的区别 考例1:_ well go camping tomorrow depends on the weather.A.If B.Whether C.That D.Where 分析:句子的意思是:我们明天是否去野营要视天气而定.whether与if当是否讲时的区别是:在引导宾语从句时两者可以互换,但在引导主语从句、表语从句和同位语从句以及介词后面的宾语从句或后面紧跟or not时通常只能用whether,而不能用if.考例2:What the doctors really doubt is _ my mother will recover from the serious disease soon.A.when B.how C.whether D.why分析:本题句子的意思是:医生真正怀疑的是我母亲是否能很快从重病中恢复过来.whether引导的是表语从句.,考例3:It worried her a bit _ her hair was turning gray.A.while B.that C.if D.for 分析:本题句子的意思是:头发变白使她有点儿不安。It作形式主语,that引导的是主语从句。whether,if以及that引导的名词性从句的区别是:whether与if(当是否讲时)引导的名词性从句含有疑问意义;而that引导的名词性从句不含有疑问意义。,考点之五:考查名词性从句中的疑问词+ever引导的名词性从句及其与no matter+疑问词引导的从句的区别 考例 1:It is generally considered unwise to give a child _ he or she wants.A.however B.whatever C.whichever D.whenever 分析:本题句子的意思是:一般认为孩子要什么就给什么是不明智的.whatever引导的是宾语从句,A.however 和D.whenever是不能作宾语的;而C.whichever表示无论哪一个、无论哪些,表示在一定范围内的人或事物,此处并不涉及一定范围内的人或事物,所以也不能选.,考例2:Sarah hopes to become a friend of _ shares her interests.A.anyone B.whomever C.whoever D.no matter who 分析:本题句子的意思是:萨拉希望跟自己有共同爱好的人交朋友.疑问词+ever引导的名词性从句与no matter+疑问词引导的从句的区别是:前者既可以引导名词性从句也可以引导让步状语从句;后者只能引导让步状语从句.首先排除D.而选A.anyone则应在其后加who.从句中需要的是主语,所以whomever也不行.,考点之六:考查名词性从句的虚拟语气问题 考例:It is necessary that a college student _ at least a foreign language.A.masters B.should master C.mastered D.will master 分析:本题选B.句子的意思是:大学生至少应该掌握一门外语。It作形式主语,that引导的主语从句中谓语动词用虚拟语气。(1)在主语从句中用来表示惊奇、不相信、惋惜、理应如此等,谓语动词用虚拟语气(should)+do,常用的句型有:I.It is necessary(important,natural,strange,etc.)that.II.It is a pity(a shame,no wonder,etc.)that.III.It is suggested(requested,proposed,desired,etc.)that.如:It is strange that she(should)think so.,(2)表示建议、请求、命令、要求、坚持等及物动词后面的宾语从句中要用虚拟语气,常用的这类动词有suggest,propose,insist,desire,demand,request,order,command等。如:I insist that she(should)do her work alone.(3)主语是suggestion,proposal,request,decision等表示建议、请求、要求、决定等意思的词时,表语从句中谓语动词要用虚拟语气(should)+do。如:His suggestion is that we(should)hold another meeting to discuss the question.,(4)表示建议、请求、命令、要求、决定等意思的名词后面的同位语从句中谓语动词要用虚拟语气(should)+do。如:They received orders that the work(should)be done at once.,the end,
