Unit1ScienceandScientistsDiscoverusefulstructures表语从句课件高中英语人教版选择性

Book5U1:ScienceandScientistsDiscoverusefulstructures表语从句PredicativeClausesLearningobjectives:1.Understandthedefinitionandfunctionofpredicativeclauses2.Chooseproperconjunctionstointroducepredicativeclauses3.ApplythepredicativeclausestowritingcorrectlyWhatisthepredicativeineachsentence?Thatis

whyit’scalledthepresent!

PredicativeClause(表语从句)Yesterdayis

history.Tomorrowisamystery.Todayis

agift.往日已成历史，未来犹未可知，唯有今日是珍贵的赐予.那便是为什么我们称它为礼物I:DefinitionConclusion总结：思考：表语从句的结构：表语从句的构成:表语从句是指在复合句中做________的从句。它位于主句的_______之后，对主语进行解释说明，使主语的内容具体化。表语系动词+Thatiswhyit’scalledthepresent!引导词简单句Howtojudgewhetheritisapredicativeclause?1.Iwanttoknowif/whetheranyonecanhelpme.2.Onetheorywasthatbadaircausedthedisease.3.Thequestionremainedwhenthecholerawouldbedestroyed.4What

impressesmemostishisabilitytofulfillhisdreams.5.Snowmarkedtheexactplaceswhereallthosehadlived6.Thepumpwatercarriedcholeragerms.ThatwaswhySnowhadthehandleofthepumpremoved.表语从句有：引导词___

___在从句中不作成分that/whether/asif,asthough，because无含义/是否/好像/和...一样___

___在从句中作主语、宾语、表语、定语what,who,whom,which,whatever,whoever,whomever,whicheverwhose___

___在从句中作状语when,where,how,why表语从句中不用if从属连词连接代词连接副词II:Connectivewords一、从属连词：that&whether&because&asif/though等

1.Themostimportantthingisthatwefinishthefinaltask.2.Thequestioniswhetherwecanfinishitinsuchashorttime.3.Thereasonwhyhewaslateisthathegotuplate.用法归纳：a.that引导表语从句时，只起______作用，作/不作句子成分，有/没有意义。b.whether引导表语从句时，只起______作用，作/不作句子成分，通常翻译为“______”。注意，引导表语从句时通常不用if。连接√√是否主语是reason时，表语从句不能用because,

只能用that。c.注意这个结构：Thereasonwhy...is

that...连接√

特殊用法：用法归纳：表示___________________(advice,suggestion,request,

proposal,demand,order)等名词后面的表语从句要用虚拟语气,即谓语动词用“should

+动词原形”,should可省略。Myadviceisthatyou(should)thinkitoverbeforeyoumakeadecision.Mysuggestionisthatweall___________(take)anactivepartinthecomingsportsmeeting.建议，要求，命令(should)take1)特定名词+系动词＋that+（should）do结构2)because引导的表语从句常见于"This/That/It

is/wasbecause..."句型中e.g.Hewassenttothehospital.That'sbecausehewasill.That'sbecause…强调

；That'swhy…

强调

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

特殊用法：becausewhye.g.Hewas

ill.That'swhyhewassenttothehospital.原因结果3).从属连词asif/asthough引导的表语从句Itsoundsasif/thoughsomeoneisknockingatthedoor.Shelookedasifshehadbeenhitbylightning.Itseemsasifsheweremad.asif/though在从句中________(是/否)充当成分，意为“______________”;若表语从句所述的是非真实的情况，从句用_________(主句一般现在时，从句用_________时；主句过去式，从句___________时)；不似乎；好像虚拟语气一般过去过去完成who/whom/whose/which/what等二、连接代词：连接代词在表语从句中可充当主语、宾语、表语或定语。“缺什么补什么”：根据从句句意与所缺成分确定连接词如果句子中缺主语，指人用

，指物用

。如缺宾语，指人用

，指物用

。如缺定语用

或

。①Thisis_______myteacherhastaughtme—honesty.②Theproblemis_______cantaketheplaceofJim.③WhatIwanttoknowis_______wordsarehelpful.whowhatwhomwhosewhatwhichwhatwhowhose三.连接副词:连接副词在表语从句中充当状语，可表时间、地点、原因、方式等，不可省。依据“缺什么补什么”原则确定正确的连词。如缺时间状语用

；地点状语用

。

原因状语用

；方式状语用

。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年天津卷单项选择）WhatpuzzlesLily'sfriendsis____shealwayshassomanycrazyideas.A.whether B.why C.what D.when2.Theamazingthingaboutthespringis____thecolderthetemperaturegets,thehotterthespring!（2021新高考1卷语法填空）3.theyalsoneedtobereadytogiveinterviewsinEnglishwithinternationaljournalists.That’s_______theyneedanEnglishtrainer.（2023新高考II卷）BwhythatIII:UsingstructuresExercise02Translation1.尽可能多地练习才是成功的秘诀所在。（Usingpredictiveclause）_____________________________________________2.ThereasonwhyshewaslatewasthatshewatchedTVtillmidnightyesterday.（英译汉）。（汉译英）_________________________________________________3.WhatconcernedYuanlongpingmostwasthatfarmersoftenhadpoorharvestsandsometimesevenhadaseriousshortageoffoodtoeat.（英译汉）—————————————————————————————Topracticeasmuchaspossibleiswherethesecrettosuccesslies.她迟到的原因是昨天晚上看电视看到午夜。袁隆平最关心的是农民经常粮食欠收，有时甚至出现严重的食物短缺Whatconcernsyoumost?Usefulexpressions:Whatconcernsmemostis...Mybiggestproblem/headacheishow/why/when...Exercise03：DiscussionandwritingWriteashortparagraphaboutusingthephones1.Myfeelin