最新(全)高中英语主语从句课件PPT.ppt

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1、(全)高中英语主语从句学习目标：1.掌握主语从句的基本概念；2.能从句中找出主语从句，并翻译句子；3.能够概括出主语从句的引导词；4.学会根据句意选择恰当的引导词。三简单句的五种基本类型Islept.2.Iatedishes.3.Iwashappy.4.Parentsgavemepocketmoney.5.Springfestivalmademefat.主+谓(Ｓ+Vi)主+谓+宾(S+Vt+O)主+谓+间宾+直宾(S+Vt+IO+O)主+系+表(S+link-V+P)主+谓+宾+宾补(S+Vt+O+C)一.句子转化eg:Thenewsmakesmelaugh.Thathefaile

2、dthetestmakesmelaugh.eg:Myhometownisfullofwind.Wherewegrowupisfullofwind.eg:Alovelydeskmateisneededbyme.WhoIneedislovely.主语从句定义：主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。主语从句的引导词：连词that,whether连接代词who(ever),whom(ever),which(ever),what(ever)连接副词where,when,why,how1）从属连词：that，whether等.tha

3、t引导主语从句只起引导作用，本身无实际意义，在主语从句中不充当任何成分，但不能省略。Thatpeoplecutdowntoomanytreesdestroyedthebalanceofnature.Whetherlifewillcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanbesolved..Itwasnotclearwhetherthesolidshapewouldlastornot.SubjectClauseSubjectFormedSubjectWhetherthesolid

4、shapewouldlastornotwasnotclear.Real引导主语从句在句首只能用whether,有it作形式主语的whether/if都可以.Conclusion:ifIf×___hemadeanimportantspeechatthemeetingwastrue.2.___we’llgocampingtomorrowdependsontheweather.3.___isknowntousallthatAmericaisadevelopedcountry.注意:由that引导的主语从句有时为了使句子结构平衡,避免“头重脚轻”,常用it作形式主语,而把从句放在后面。例如:

5、1.Thathewillrefusethispieceofadviceisimpossible.______________________________________________________________________________2.Thattheyshouldlikeeachotherisnatural._____________________________________*it为形式主语Itisnaturalthattheyshouldlikeeachother.Itisimpossiblethathewillrefusethispieceofadvic

6、e.这样就构成了下面一些常用句型:1)Itis+n.+从句Itisapity/shamethat...遗憾的是……Itisasurprisethat…令人惊奇的是…Itisafactthat……是事实Itiscommonknowledgethat……是常识*_______________(很遗憾)welostthematch.*______________(这是事实)hecheatedintheexam.ItisapitythatItisafactthat2)Itis+adj.+从句It’scertainthat…肯定…Itispossiblethat...很可能……Itisunli

7、kelythat...不可能……Itisobviousthat…很明显…Itisnecessaryimportantatural...that…*_________________(很可能)shewillcomebacktomorrow.*_________________(很明显)thismeasureiseffective.+(should)+do…ItispossiblethatItisobviousthat主语从句的虚拟语气①表“应该，惊讶