Unit 1 Discover useful structures 表语从句课件-高中英语人教版（2019）选择性必修第二册

Unit1ScienceandScientistsGrammar表语从句观察上面对话,用适当的连词填空。1.Theproblemis____wecangetthethingsweneed.2.TohelpAfricaachievesustainabledevelopmentis_____mattersinthelongrun.3.WhatItoldhimwas____Iwouldfindhimagoodplay.4.Thatis_____Iwanttotellyou.5.Thatis____shefailedtopasstheexam.howwhatthatwhatwhy【要义详析】一、概念在主从复合句中充当表语的从句,叫作表语从句。它常位于系动词之后,用来说明主语的身份或特征。二、连接词的用法1.that引导的表语从句。用法:①无意义②不充当句子成分③不可省略*Thetroubleisthatshehaslosthisaddress.麻烦的是她弄丢了他的地址。*Mysuggestionisthatweshouldtellhim.我的建议是我们应该告诉他。2.whether引导的表语从句。*Thequestionremainswhethertheywillbeabletohelpus.问题还是他们能否帮我们。3.连接代词who/whom/whose/what/which引导表语从句,在从句中作主语、宾语、表语和定语。*Heisnolongerwhathewas.他已经不再是以前的样子。*Theproblemiswhoisfitforthisjob.问题是谁适合做这个工作。*Theproblemiswhoseworkisthebest.问题是谁的工作是最好的。4.连接副词引导的表语从句。*Theproblemishowwecanfindhim.问题是我们如何找到他。*That’swhereyouarewrong.那就是你不对的地方。5.because,asif/asthough等引导的表语从句。*Helookedasifhewasgoingtosmile.他看上去好像要微笑。*That’sbecauseyoucan’tappreciatemusic.那是因为你不会欣赏音乐。三、注意事项1.why和because引导的表语从句的区别。That’swhy...意为“那是……的原因”,强调结果That’sbecause...意为“那是因为……”,强调原因*Ididn’tphoneher,andthat’swhyshegotangrywithme.(强调她生气的这一结果)我没有给她打电话。那就是她生我气的原因。*Ididn’tphoneher,andthat’sbecauseIgotangrywithher.(强调没打电话的原因)我没有给她打电话。那是因为我生她的气了。2.reason作主语或主语中包含事件的起因时,后面的表语从句表示原因时,要用that来引导,而不是because。*Thereasonwhyhewasabsentfromworkwasthathewasill.他没来上班,因为他病了。3.表语从句中的虚拟语气。在表语从句中,表示间接的命令、要求、请求、建议、决定等,主句中的主语通常是:advice,suggestion,proposal,request,order,idea等,从句谓语形式是“should+动词原形”(should可以省略,但不可换成would)。*Mysuggestionisthatwe(should)startearlytomorrow.我的建议是我们明天早出发。【完成句子】(1)(2020·全国Ⅰ卷)Thebottomlineis__________________________.底线是我不应该对我的孩子们撒谎。

(2)Thequestionis____________________________.

问题是这部电影是否值得看。(3)Now__________________shehadknownMillieforyears.

现在看起来好像她认识米莉已有好多年了。(4)Myadviceisthatyou______________________________asoftenaspossible.

我的建议是你尽可能经常地练习说英语。thatIshouldn’tlietomykidswhetherthefilmisworthseeingitseemsasthough/if(should)practisespeakingEnglishⅠ.选用适当的连接词填空that,why,whether,what,asif,who,because,where1.Thequestiondiscussedatthemeetingwas_______itwasworthtrying.2.Allthiswasovertwentyyearsago,butitis____itwereonlyyesterday.

3.Thetroubleis____Ilostthekeytomyroom.4.I’mabitsleepy,andit’s_______Iwasupallnight.5.Goandgetyourcoat.It’s______youleftit.6.Theproblemis____wecangettotaketheplaceofTed.7.Thatis____wewerelatelasttime.8.Thevillageisnolonger_____itusedtobe.whetherasifthatbecausewherewhowhywhatⅡ.完成句子1.________________(那就是我认为……的原因)thetripalongtheYangtzeRiverwillbeabetterchoice.

2.Topracticeasmuchaspossibleis__________________(秘密所在).

3.Itlooked_______________________________(好像他已经理解了这个问题).

4.Thefactis_______________________(他工作18个小时)everyday.

5.Youaresayingthateveryoneshouldbeequal,andthisis_______________.(我不同意之处)

That’swhyIthinkwherethesecretliesasifhehadunderstoodthequestionthatheworksfor18hourswhereIdisagree6.Yourcoatisstill______________(在你放的地方).

7.Ihadneitheraraincoatnoranumbrella.Thatis____________(我全身被淋湿的原因).

8.Itsounds_________________________________(好像某人正在敲门).

whereyouputitwhyIgotwetasifsomebodyisknockingatthedoor【完成句子】夫妻两人在谈论破冰船“雪龙号”。W:Hi,mydear.1.________________________(今天的好消息是)China’sresearchicebreakerXuelonglefttheZhongshanStationonitswaybacktoChina.

M:Yes.ItlefttheZhongshanStationonFebruary14thwithoursonaboard.W:Theproblemis2.______________________(雪龙号什么时间到达)nearZhongshan.Idon’twanttowaittoolongtoseeourson.

ThegoodnewstodayisthatwhenXuelongwillarriveM:OnFebruary9th.3._____________(这是因为)itsuppliedthestationwithfueloil,then