名词性从句.(--)pptPPT文档格式.ppt

名词性从句.(--)pptPPT文档格式.ppt

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Themanlookedaround.Thattheboyfailedagainintheexamdisappointedhismother.同样作主语，从句可以表示较复杂的含义,一般是个动作或性质Iknowhim.Iknowthatheiswritinghiscompositioninhisroom2.为什么要有名词性从句？

那人看了看四周.（名词作主语）那孩子考试又不及格令他母亲很失望.（从句作主语）我知道他在房间里写作文.从句的特征:

是一个句子,有一个引导词,引导词做从句的一个成分（that除外）名词能做的成分,从句都能做从句表达的意思比名词复杂得多主语从句thatwhetherwhowhomwhosewhatwhichwhenwherewhyhow从句引导词:

1.ThatheknowsJapaneseisknowntoall.他懂日语,这一点大家都知道令我惊讶的是在这儿见到他.3.Whenhewillcomeisunknown.4.Whetherheiscomingdoesntmattermuch.他来不来没什么要紧的他什么时候来不清楚.他们是怎么登上山顶的仍是个秘密.5.Itremainsasecrethowtheyclimbedupthemountain.主语从句的位置1.在句首2.主语较长时通常放在后面,句首主语用It主语太长了!

放到句尾DetailsDetailsDetailsDetailsThat无词义无词义,不可省略不可省略What“什么”,“所.的”2.Whatsurprisedmewastoseehimhere.When“什么时候”主语从句主语从句不用不用if位于句首位于句首It作主语的常用句型有:

1.It+be+形容词+that从句2.It+be+名称词组（duty/pity.）+that从句3.It+be+过去分词（said/thought.）+that从句4.It+不及物动词（seem/happen.）+that从句Itisapitythatwecantgoswimming.Itissaidthathetoldhereverything.IthappenedthatIwasoutthatday.Itiscertainthathewilldowellintheexam.1.真可惜我们不能去游泳.2.碰巧那天我外出了.3.他考试肯定会考好.4.据说他已告诉了她一切.注意:

Itlookedthathewasright.（）可以说:

Itlooksasif.happen只有it句型Itissaid只有it句型MoreIsittruethatthescientistwillgiveusalecture?

（）Isthatthescientistwillgiveusalecturetrue?

（）疑问句中应该用形式主语It句型1Whateverwedomustbeintheinterestofthepeople.（）Itmustbeintheinterestofthepeoplewhateverwedo（）2名词性关系代词whatever/whoever/whichever/wherever/what引导的主语从句一般放在句首改错1.Itistruewhathesaid.Whathesaidistrue.放在句首2.Isthathewillcomecertain?

Isitcertainthathewillcome?

问句3.Hecanswimisknowntoall.Thathecanswimisknowntoall.从句必须有引导词表语从句从句同主语从句（11个）,外加asif/引导词:

asthough,1.Thetruthisthathehasneverbeentothecountryside.2.ThequestioniswhetherwecanfinishtheexperimentbyFriday.3.Itlooksasifitweregoingtorain.实际情况是他从未去过农村.that一般不省略问题在于我们能否在明天下午之前完成这项实验.表语从句不用if好象看上去要下雨似的.（其实不会）asif/asthough从句常表示不真实的情况Shetalksasif/asthoughshehadbeentherebefore.她说话的口气好象以前去过那儿似的.又比如:

4.Thisschoolisnolongerwhatitwasbefore.这所学校已不再是从前的那个样子了.what=thethingthatMore系动词后面系动词后面注意下列表语从句中where,how,why的译法1.ThisiswhereLuXunoncelived.2.Thatwashowtheywonthematch.3.Thisiswhyshegotupsoearlythismorning.这就是鲁迅曾经住过的地方.他们就是这样赢得这场比赛的.这就是她为什么今天早上起得这么早的原因.1.我们就是这样克服困难的.2.那就是他昨天缺席的原因.3.这就是我们上星期日碰头的地方.Thisis/Thatwashowweovercamethedifficulties.Thatiswhyhewasabsentyesterday.ThisiswherewemetlastSunday.固定句型:

ThisiswhereThisiswhyThisishow.这就是的地方这就是的原因这就是的方法宾语从句从句（同主语从句）,增加if,可与whether引导词:

互换,但不与ornot连用1.Theypretended（that）theyknewhowtodoit.他们假装知道怎么做这事。

That从句做pretend的宾语我暗中想他讲的不是真话.谓语与从句之间有插入语时,that不可省不可省略略2.Ithoughttomyselfthathewasnottellingthetruth.3.Shesaid（that）shecouldnttellmeandthatIcouldntunderstand.宾语从句并列时,只省略第一个that4.Everythingdependsonwhetherwehaveenoughtime.（if）if/whether表示“是否”可以互换,五种情况只用whether:

1.在介词后面2.与ornot连用3.在主语从句,表语从句,同位语从句中5.Idontknowwhetherhewillcomeornot.（if）6.Thequestioniswhetherhewillagree.（if）More1.Idoubtif/whetherhewillpasstheexam.2.Idontdoubtthatwewillwinthematch.3.Doyoudoubtthathediditonhisown?

doubt问题肯定句中用if/whether否定句中用that疑定句中用that1.Idoubt_heistellingthetruth.2.Weneverdoubt_theplanwillbecarriedout.3.Doeshedoubt_youarefromAustria?

4.Imdoubtful_hewillagreetothis.if/whetherthatthatif/whether宾语从句经常做介词的宾语1.TheSwedestoodstill,except_hislipsmovedslightly.2.Sheisnotsatisfiedwith_shehasachieved.3.Maryalwaysthinksof_shecandomorefortheclass.4.Hewrotealetterofthanksto_helpedhim.（任何一个）5.Itdependsonifwehaveenoughtime.whetherwehaveenoughtime.介词后面不用ifthatwhathowwhoever6.Areyousorryforwhichyouhavedone?

whatyouhavedone?

介词后面不用which宾语从句经常作表语形容词的宾语1.Imafraid（that）Illbelate.2.Weweresurprisedthathelostthegame.我恐怕要迟到了.that可以省略我们对他在比赛中的失败感到惊异.此类表语形容词有:

afraidpleasedhappysatisfiedanxioussuresurprisedcertaingladaware用它们造句that从句只跟在except,but,in,besides,save五个介词后面1.Wethinkthatmiddleschoolstudentsmasteroneforeignlanguagepossible.（改用形式宾语it）2.2.Wehavemadethataforeignlanguageisusefulweaponinthestruggleoflifeclear.（改用形式宾语it）我认为学好英语是必要的.英语有句尾重心的原则IconsiderthatweshouldlearnEnglishwellnecessary.Weconsiderhersuitableforthejob.句尾太轻宾语宾补considerfindthinkfeelmake等动词常带宾语补足语,这时要用形式宾语it,宾语从句放到宾补之后Wethinkitpossiblethatmiddleschoolstudentsmasteroneforeignlanguage.Wehavemadeitclearthataforeignlanguageisusefulweaponinthestruggleoflife.exerciseIconsideritnecessarythatweshouldlearnEnglishwellit不能漏从句后移correction1