Unit1ScienceandScientistsDiscoverusefulstructures表語從句課件高中英語人教版選擇性

Book5U1:ScienceandScientistsDiscoverusefulstructures表語從句PredicativeClausesLearningobjectives:1.Understandthedefinitionandfunctionofpredicativeclauses2.Chooseproperconjunctionstointroducepredicativeclauses3.ApplythepredicativeclausestowritingcorrectlyWhatisthepredicativeineachsentence?Thatis

whyit’scalledthepresent!

PredicativeClause(表語從句)Yesterdayis

history.Tomorrowisamystery.Todayis

agift.往日已成歷史，未來猶未可知，唯有今日是珍貴的賜予.那便是為什么我們稱它為禮物I:DefinitionConclusion總結(jié)：思考：表語從句的結(jié)構(gòu)：表語從句的構(gòu)成:表語從句是指在復(fù)合句中做________的從句。它位于主句的_______之后，對主語進行解釋說明，使主語的內(nèi)容具體化。表語系動詞+Thatiswhyit’scalledthepresent!引導(dǎo)詞簡單句Howtojudgewhetheritisapredicativeclause?1.Iwanttoknowif/whetheranyonecanhelpme.2.Onetheorywasthatbadaircausedthedisease.3.Thequestionremainedwhenthecholerawouldbedestroyed.4What

impressesmemostishisabilitytofulfillhisdreams.5.Snowmarkedtheexactplaceswhereallthosehadlived6.Thepumpwatercarriedcholeragerms.ThatwaswhySnowhadthehandleofthepumpremoved.表語從句有：引導(dǎo)詞___

___在從句中不作成分that/whether/asif,asthough，because無含義/是否/好像/和...一樣___

___在從句中作主語、賓語、表語、定語what,who,whom,which,whatever,whoever,whomever,whicheverwhose___

___在從句中作狀語when,where,how,why表語從句中不用if從屬連詞連接代詞連接副詞II:Connectivewords一、從屬連詞：that&whether&because&asif/though等

1.Themostimportantthingisthatwefinishthefinaltask.2.Thequestioniswhetherwecanfinishitinsuchashorttime.3.Thereasonwhyhewaslateisthathegotuplate.用法歸納：a.that引導(dǎo)表語從句時，只起______作用，作/不作句子成分，有/沒有意義。b.whether引導(dǎo)表語從句時，只起______作用，作/不作句子成分，通常翻譯為“______”。注意，引導(dǎo)表語從句時通常不用if。連接√√是否主語是reason時，表語從句不能用because,

只能用that。c.注意這個結(jié)構(gòu)：Thereasonwhy...is

that...連接√

特殊用法：用法歸納：表示___________________(advice,suggestion,request,

proposal,demand,order)等名詞后面的表語從句要用虛擬語氣,即謂語動詞用“should

+動詞原形”,should可省略。Myadviceisthatyou(should)thinkitoverbeforeyoumakeadecision.Mysuggestionisthatweall___________(take)anactivepartinthecomingsportsmeeting.建議，要求，命令(should)take1)特定名詞+系動詞＋that+（should）do結(jié)構(gòu)2)because引導(dǎo)的表語從句常見于"This/That/It

is/wasbecause..."句型中e.g.Hewassenttothehospital.That'sbecausehewasill.That'sbecause…強調(diào)

；That'swhy…

強調(diào)

1)Hefailedthemathexam.That’s__________hewastoocareless.2)Hewastoocareless.That’s______hefailedthemathexam.

特殊用法：becausewhye.g.Hewas

ill.That'swhyhewassenttothehospital.原因結(jié)果3).從屬連詞asif/asthough引導(dǎo)的表語從句Itsoundsasif/thoughsomeoneisknockingatthedoor.Shelookedasifshehadbeenhitbylightning.Itseemsasifsheweremad.asif/though在從句中________(是/否)充當(dāng)成分，意為“______________”;若表語從句所述的是非真實的情況，從句用_________(主句一般現(xiàn)在時，從句用_________時；主句過去式，從句___________時)；不似乎；好像虛擬語氣一般過去過去完成who/whom/whose/which/what等二、連接代詞：連接代詞在表語從句中可充當(dāng)主語、賓語、表語或定語。“缺什么補什么”：根據(jù)從句句意與所缺成分確定連接詞如果句子中缺主語，指人用

，指物用

。如缺賓語，指人用

，指物用

。如缺定語用

或

。①Thisis_______myteacherhastaughtme—honesty.②Theproblemis_______cantaketheplaceofJim.③WhatIwanttoknowis_______wordsarehelpful.whowhatwhomwhosewhatwhichwhatwhowhose三.連接副詞:連接副詞在表語從句中充當(dāng)狀語，可表時間、地點、原因、方式等，不可省。依據(jù)“缺什么補什么”原則確定正確的連詞。如缺時間狀語用

；地點狀語用

。

原因狀語用

；方式狀語用

。whenwherewhyhowwhen/where/why/how等①

Yourdictionaryisstill_______youputityesterday②

The

question

is

______

he

can

arrive

at

the

hotel.③My

problem

is

_____we

can

finish

such

a

difficult

task

in

three

days.

It's

simply

impossible.wherewhenhowExercise011.（2021年天津卷單項選擇）WhatpuzzlesLily'sfriendsis____shealwayshassomanycrazyideas.A.whether B.why C.what D.when2.Theamazingthingaboutthespringis____thecolderthetemperaturegets,thehotterthespring!（2021新高考1卷語法填空）3.theyalsoneedtobereadytogiveinterviewsinEnglishwithinternationaljournalists.That’s_______theyneedanEnglishtrainer.（2023新高考II卷）BwhythatIII:UsingstructuresExercise02Translation1.盡可能多地練習(xí)才是成功的秘訣所在。（Usingpredictiveclause）_____________________________________________2.ThereasonwhyshewaslatewasthatshewatchedTVtillmidnightyesterday.（英譯漢）。（漢譯英）_________________________________________________3.WhatconcernedYuanlongpingmostwasthatfarmersoftenhadpoorharvestsandsometimesevenhadaseriousshortageoffoodtoeat.（英譯漢）—————————————————————————————Topracticeasmuchaspossibleiswherethesecrettosuccesslies.她遲到的原因是昨天晚上看電視看到午夜。袁隆平最關(guān)心的是農(nóng)民經(jīng)常糧食欠收，有時甚至出現(xiàn)嚴重的食物短缺Whatconcernsyoumost?Usefulexpressions:Whatconcernsmemostis...Mybiggestproblem/headacheishow/why/when...Exercise03：DiscussionandwritingWriteashortparagraphaboutusingthephones1.Myfeelin