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1、Nounclausesasthesubject主语从句1基本概念2什么是主语？主语：是一个句子说明的人或事物,即叙述的主题，一般位于______。句首IlikeEnglish.Thetrainleft.3Jimisgoodatplayingthepiano.Toseeistobelieve.Smokingisbadforhealth.Whathehassaidistrue.找出主语(名词）（不定式）（动名词）(从句）4主语从句(SubjectClause)在主从复合句中充当主语的从句就是主语从句,它是名词性从句之一。引导主
2、语从句的连接词有：从属连词that,whether；连接代词who,what和which；连接副词when,where,how和why。5考纲专题解读1.了解名词性从句的基本用法，掌握名词性从句的引导词及引导词在名词性从句中的作用，辨析that与what,if与whether等引导词的用法。2.明确it作形式主语和形式宾语、代替主语从句及宾语从句的用法，及其与强调句的区别。3.区分that引导的同位语从句及定语从句。6他通过了考试让老师很高兴。Hepassedtheexam.Itmadetheteacherhappy.He
3、passedtheexammadetheteacherhappy.Thathepassedtheexammadetheteacherhappy.理解主语从句7他何时要来还不清楚。Whenwillhecome?Itisnotclear.Whenwillhecomeisnotclear.Whenhewillcomeisnotclear.理解主语从句8Thathewillsucceediscertain.Whetherhewillcomemakesnodifference.Whatweneedismoretime.找出主语从句T
4、ip:先找谓语9Thathewillcomeiscertain.Whetherhewillcomeisuncertain.引导词1)从属连词that和whether：_____只起引导作用，本身无意义，不充当任何分，但不能省略。whether不做成分，表“_______”。在主语从句中只能用_________,不能用___that是否whetherif10Whowillgomakesnodifference.Whatweneedismoretime.WhichbookIshallchoosehasn’tbeendecide
5、d.2)连接代词who,what,which引导词11Whoevercomesiswelcome.WhateverIhaveisyours.Whicheveryouwantisyours.3)连接代词whoever,whatever,whichever引导词whatever=anythingthatwhoever=anyonewho12Whenwewillleavehasn’tbeendecided.Howshekeepshealthyisasecret.Whyhecriesisnotclear.Wherethemeeti
6、ngwillbeheldisnotknown.4)连接副词when,where,how,why引导词131.引导词：从属连词that,whether；连接代词who,what,which；whoever,whatever,whichever;连接副词when,where,how和why。2.语序：陈述句语序3.在主语从句中只能用whether,不能用if主语从句的特点：14Itiscertainthathewillwinthematch.Thathewillwinthematchiscertain.注解：一般来说主语从句都
7、是放在,但有时为了使句子，避免"头重脚轻",常用作，从而把主语从句放在．句首保持平衡it形式主语后面15这样就构成了下面一些常用句型:1)Itis+n.+thatItisapity/shamethat...可惜的是……Itisasurprisethat…令人吃惊的是…Itisafactthat…事实是…Itiscommonknowledgethat……是常识*_______________(很可惜)welostthematch.*______________(这是事实)hecheatedintheexam.Itisapit
8、ythatItisafactthat161.令人吃惊的是他改变了主意。Itisasurprisethathechangedhismind.2.真可惜你错过了这么一个好机会。Itisapitythatyoumissedsuchagoodchance.3.事实是我们周围的污染正变得越来越严重。Itisafa
