Unit 1 Science and Scientists Discover useful structures 表語從句 課件【知識精研】高中英語人教版（2019）選擇性必修第二冊

表語從句PredicativeClauseLearningtargets1.Discovertheregulationandlearntojudgewherethepredicativeclauseis.2.Befamiliarwiththelinkingverbsandtrytotelltheirfunctions.3.Beabletochoosethelinkingverbscorrectlyandthenusethemfluently.Pointoutthefunctionofeachnouninthefollowingsentences:

1.Theworld

lovesnature.2.Knowledgeis

power.3.We

Chinese

are

peace-loving.subjectobjectpredicativesubjectsubjectappositionpredicativeReview主語從句在功能上相當于名詞主語

{Hisjobisimportant.Whathedoesisimportant.主語

{Hisstoryisinteresting.

Whathesaidisinteresting.

一、主語從句的概念從句在復合句中作主語的名詞性從句，通常放在主句謂語動詞或be動詞之前。

二、主語語從句三要素引導詞（連接詞）語序時態(tài)Review定義引導詞注意點010203CONTENT目錄表語從句的定義PART01Thepersonstoodinfrontofyoujustnowis

headmaster.

Thedoorremained

closed.

Thehouselooks

old.

Thesituationwent

worse.predicativelinkingverbsubject+linkingverbs+predicative1.Thedefinitionofpredicativeclause.Thequestioniswhowilldoit.Thequestionisdifficult.在復合句中充當表語的從句叫表語從句。位于主句的系動詞之后，對主語進行解釋、說明，使主語的內(nèi)容具體化。表語從句必須用陳述語序。（表）（表）表語從句2.Thestructureofpredicativeclause.主語+系動詞+引導詞

+簡單句Thisiswhyhedidit.e.g.WhatIwanttosayis

that

Iamtired.表語從句表語從句的判斷Thejudgmentofthepredicativeclause系動詞后的成分為表語。系動詞后的從句為表語從句系動詞主要是be動詞（am,is,are,was,were)，意為“是”。其它系動詞：1)持續(xù)系動詞（表示主語持續(xù)或保持一種狀況或態(tài)度）：keep,remain,stay,stand2)“像”系動詞（表示看起來像）：seem,appear,look3)感官系動詞：look,feel,smell,sound,taste4)變化系動詞（主語變成什么樣）：become,grow,turn,fall,get,go5)終止系動詞（主語已終止動作）：prove,turnoutThefactwasthathehadforgottenaboutit.Everythingremainedasitusedtobeinthisroom.Shelooksasifshewereill.Thetroublewaswhetherwecouldmanageitourselvesornot.Theproblemisnotwhowillgo,butwhowillstay.Thisishowtheyovercamethedifficulties.Hemissedthelecture.Itwasbecausehisflightwasdelayed.PredicativeClauseTaskTwo:Circletheconjuctionofeachpredicativeclause.TaskOne:Underlinethe

linkingverbs.表語從句的引導詞PART02引導詞Conjunctionwords引導詞用法從屬連詞that無成分，無意義Whether無成分，意為“是否”連接代詞what,which,who,whom,…+ever,whose在從句中充當主語，賓語，表語，定語連接副詞how,when,where,…+ever,why在從句中充當狀語其它連接詞because,asif,asthough因為，好像，似乎Tip:缺什么補什么，什么都不缺用that（what所的）即學即練learningandpracticeThisis__________Iwant.MyEnglishislimited.Thisis_______IhatereadingEnglishbooks.Thevillageis_________Iusedtospendmyholiday.Itis___________Ireallylovethewayhebehaves.Thetroubleis__________weareshortoffunds.Myproblemis__________coatissuitableforme.I‘

d

like

to

startmyownbusiness—that’s________IwanttodoifIhadthemoney.WhatIwanttoknowis_______willsupportme.whatwherewhybecausethatwhichwhatwho表語從句的注意點PART03ThequestionishowcanImakeyouunderstandtheknowledge.ThequestionishowIcanmakeyouunderstandtheknowledge.Rule1:表語從句和賓語從句、主語從句一樣，要用陳述語序：主語+謂語。表語從句的語序It

is

where

helivesin.It

is

where

helivedin10yearsago.Rule1主句用現(xiàn)在時或?qū)頃r，從句可用任何時態(tài)，根據(jù)實際情況而定。表語從句時態(tài)2.如果主句是過去的時態(tài)（一般過去時，過去進行時），從句的時態(tài)一定要用相對應(yīng)的過去的某種時態(tài)（一般過去時，過去進行時，過去將來時，過去完成時）Herwishwasthatshecouldloseweightsoon.Itlookedasifitwasgoingtorain.Thequestionwaswhetherhisfatherwouldcomebackthenextday.Thereasonwhyhewaslatewasthatthetrainhadalreadyleft.表語從句的注意點ThegrammarrulersofthepredicativeclauseRule2:表語從句的引導詞沒有if!!!Thequestionisifitisworthwhiletodoit.Thequestioniswhetheritisworthwhiletodoit.只用whether,不用if的情況WhethertodoWhether……ornot介詞后的賓語從句從句：句首的主語從句，表語從句，同位語從句表語從句的注意點ThegrammarrulersofthepredicativeclauseRule3:表語從句的虛擬語氣Myproposalisthatwe(should)startearlytomorrow.Iproposethatwe(should)startearlytomorrow.Itisproposedthatwe(should)startearlytomorrow.在表示“建議，勸說，命令”的名詞idea,advice,suggestion,request,proposal等后面的表語從句中，謂語動詞用“should+動詞原形”，should可省略表語從句的注意點ThegrammarrulersofthepredicativeclauseRule4:asif/asthough引導的表語從句常跟在look,seem,sound,feel等后面語氣：若表示真實情況：用陳述語氣若表示非真實情況：用虛擬語氣Darkcloudsaregathering.Itlooksasifit’sgoingtorain.Itseemedasifthenightwouldneverend.表語從句的注意點ThegrammarrulersofthepredicativeclauseRule4

:asif/asthough引導的表語從句的虛擬語氣：

若跟現(xiàn)在事實不符：過去式（be動詞用were）若跟過去事實不符：haddone

若跟將來事實不符：would/could+動詞原形Thelittleboytalksasifhekneweverythingintheworld.Hefeltasifhehadmetthisyoungladyforalongsomewhere.

即學即練learningandpracticeMysuggestionisthatwe__________(go)tohospitalatonce.Whenapencilispartlyinaglassofwater,itlooksasifit_______(be)broken.Myideaisthatwe___________(get)morepeopletoattendtheconference.Thelittlegirltalkedasifshe___________(be)agrown-up.Shelooksasifshe_________(be)tenyearsyounger.shouldgowereshouldgethadbeenwere(1)That’sbecausehedidn’tunderstandme.(2)It’swhyhegotangrywithme.那是因為他不理解我。那正是他對我生氣的原因。(強調(diào)原因）（強調(diào)結(jié)果）1、句型：That/Itis/wasbecause……那是因為……That/Itis/waswhy……

那是……的原因Rule5:由從屬連詞because,why引導的表語從句2、句型：thereasonwhy……isthat……

…的理由是……

why引導定語從句

That/Itis/waswhy……

那是……的原因why引導表語從句(1)Thereasonwhyhewaslateisthathewasill.他遲到的理由是他病了。注意：

主句主語為reason,只能用that引導表語從句，不可用because.(2)

It’swhy

hegotangrywithme.那正是他對我生氣的原因。1.Thereasonwhyhefailedis________hewastoocareless.A.becauseB.thatC.forD.becauseof2.Thisis___Sarawaslateforthemeeting.A.whyB.whatC.howD.That3.Thereasonis___heisunabletooperatethemachine.A.becauseB.whyC.thatD.Whether

B

C

A即學即練learningandpractice1.Heiscarelessandirresponsible.Thatwas_______hewasfired.2.Hewasfired.Thatwas_________heiscarelessandirresponsible.3.Thereason_______hewasfiredwas________hewascarelessandirresponsible.whybecausewhythat1.__________wewillgocampingthisweekenddependsontheweather.2.Itisuncertain________sideeffectthemedicinewillbringabout,althoughabouttwothousandpatientshavetakenit.3.Tomcamelateforthemeeting.Thatwas________hewasill4.Facedwithchallenges,youshouldbelieveyourcourageis_________makesadifference.5.Itisobvious________hetookmyumbrellabymistake.6.Yours