Unit 1 Grammar 表语从句课件 【知识建构+备课精研】高中英语人教版（2019）选择性必修第二册

Unit1ScienceandScientists

1.EnabletheSstomastertheusageofpredicativeinthisunit.2.EnabletheSstousethepredicativepatternsflexibly.3.TraintheSstoapplysomeskillsbydoingtherelevantexercises.TeachingGoals01

SubjectClause(主语从句)

ObjectClause(宾语从句)

PredicativeClause

(表语从句)

AppositiveClause(同位语从句)

Nounclause

名词性从句:名词性从句在功能上相当于名词表语Thisishisjob.Thisiswhathedoeseveryday.宾语Idon’tlikehisjob.Idon’tlikewhathedoeseveryday.Whowillwinthematchisstillunknown.

Iwanttoknowwhathehastoldyou.Thefactisthatwehavelostthegame.Thenewsthatwewonthegameisexciting.主语从句宾语从句表语从句同位语从句

名词性从句的分类1.

Howtojudgewhetheritisapredicativeclause?主要依据：系动词后Theproblemisdifficult.Theproblemis

thathecannotspeakEnglish.Sth表语从句的定义PART01

一个句子在复合句中充当表语就叫表语从句.表语从句放在连系动词后，如：be，seem,

remain等，有时用asif

引导。e.g.TheproblemisthatIamshortofmoney.Chinaisnolongerwhatsheusedtobe.

Thequestionis

howwecangetthere.Itlooks

asifitisgoingtorain.

表语从句主语+系动词+that从句表语从句放在is/was后面的句子,“是……”Theproblemisdifficult.TheproblemisthathecannotspeakEnglish.Sth.表语从句表语从句的判断Thejudgmentofthepredicativeclause系动词后的成分为表语。系动词后的从句为表语从句系动词主要是be动词（am,is,are,was,were)，意为“是”连系动词状态类:

be动词,seem,appear,keep,remain,stay…变化类:become,get,turn,grow,fall,come,go…感官类:look,smell,taste,sound,feel…表语从句的引导词PART02连词that,whether,asif,asthough,because....连接代词what/whatever,which/whichever,who/whoeverwhom,whose...连接副词when,where,why,how...表语从句的引导词Conjunction

words引导词用法从属连词that“无名无分”whether“有名无分”,名为“是否”连接代词what,which,who,whom,wh+ever,whose充当主语，宾语，表语，定语连接副词how,when,where,…+ever,why充当状语其它连接词because,asif/though因为;

好像，似乎1.连接代词Conjunctionwords连接代词:

what,which,who,whom,wh+ever,whoseThat’swhatmakesyoubeautiful.Whatmakesuscuriousiswhatledtothevictory.That’swhatheisworryingabout.what可以做________,___意义，意为“_____”主语主语宾语主语和宾语有什么2.连接副词:why,

how,when,where,...+everHefailedintheexam.That'swhy

hefeltfrustrated.Thatiswhyhewaslateforclassagain.Ihadneitheraraincoatnoranumbrella.That’swhyIgotwetthrough.why可以做_____,___意义，意为“_____”状语有为什么状语状语状语3.其他连词（词组）引导的表语从句

（1）because引导的表语从句：This/That/Itis/wasbecause…That'sbecauseweneverthoughtofit.Shehasn’tcome,thisisbecausesheisill.(2)asif/though引导的表语从句：常置于感官系动词look,seem,sound等后面，常用虚拟语气。Itlooksasifhewereherfather.1.表语从句的【特殊句式】

Thereasonwhy....isthat....“...的原因是...”Thereasonisthat...“原因是...”Thereason________IlikeEnglishis________itbringsmehappiness.Thereasonis________Englishbringsmejoy.做运动很重要，那是因为它能增强我们的体质。Doingexerciseplaysanimportantroleinourlife.Thatisbecauseitcanbuildupourbody.This/Thatisbecause....这/那是因为......我们要做运动的原因是因为它能强壮我们的身体。Thereasonwhyweshoulddoexerciseisthatitcanbuildupourbody.Thereasonwhy....isthat.....Thereasonfor......isthat.........的原因是......

作文中替换because的句式:Thereasonwhy...is/wasthat...……的原因是……Thisiswhy...这就是……的原因(强调结果)Thisisbecause...这是因为……(强调原因)我们要做运动的原因是因为它能强壮我们的身体。Thereasonwhyweshoulddoexerciseisthatitcanbuildupourbody.Thereasonwhy....isthat.....Thereasonfor......isthat.........的原因是......做运动很重要，那是因为它能增强我们的体质。Doingexerciseplaysanimportantroleinourlife.Thatisbecauseitcanbuildupourbody.This/Thatisbecause....这/那是因为......一句多译(替换because):她越来越胖的原因是吃太多的垃圾食品。③Sheisbecomingfatterandfatter.Thisis___________sheeatstoomuchjunkfood.④Sheeatstoomuchjunkfood.That's_______sheisbecomingfatterandfatter.⑤__________________________________________________________________sheeatstoomuchjunkfood.becausewhyThereasonwhysheisbecomingfatterandfatteristhat2.表语从句中的【虚拟语气】

主语是表示“建议”“命令”“要求”的名词，表语从句应使用虚拟语气，即：(should)+动词原形建议:suggestion,advice,proposal,idea命令:order,command,要求:request,requirement3.asif/asthough引导表语从句的【两种语气】

1.若表陈述语气，就用陈述语气；2.若与客观事实不符，就用虚拟语气；

若跟现在事实不符：过去式（be动词用were）若跟过去事实不符：haddone若跟将来事实不符：would/could+动词原形Attention:1.表语从句中的时态不受主句的限制.2.表语从句是不用if引导的,要用whether.3.主语是reason时，表语从句常用that，

不用because.Thereasonforhisabsencewasthathewasill.表语从句的语法规则ThegrammarrulersofthepredicativeclauseThequestionishowcanImakeyouunderstandtheknowledge.ThequestionishowIcanmakeyouunderstandtheknowledge.Rule1:表语从句和宾语从句、主语从句一样，要用陈述语序：主语+谓语。注意注意2、表语从句的引导词没有if！只用whether,不用if的情况。（1）whethertodo（2）whether...ornot...（3）介词后的宾语从句。（介词后不用if）（4）从句：句首的主语从句，宾语从句，同位语从句。

（if不能位于句）解题思路先根据句意选择不充当成分that,whether,asif/though,because连词充当状语when,where,why,how连接副词充当定语whose,what,which连接代词充当主语，宾语，表语其他再分析“充不充当句子成分”表语从句要点归纳1.表语从句一定要用陈述语序。

e.g.Oneadvantageofplayingtheguitaristhatitcangiveyouagreatdealofpleasure.2.that引导表语从句时,在句中只起连接作用,不充当句子成分,无实际意义,一般不能省略。

e.g.ThetroubleisthatIhavelosthisaddress.3.whether引导表语从句时，起连接作用，意为“是否，空间，到底”，在句中不作任何成分。

if不能引导表语从句。

e.g.Thequestioniswhetheryourunclewillofferhelptous.

DavidistalkingtoMariaabouttheirscientificresearchproject.FirstcompleteDavid'slines(A-E,usingthewordsinthebox.ThenputDavid'slinesinthecorrectorderandpracticetheconversation.A:Absolutely!Youmaynotbelieveit,butthatwas___________happenedattheinitialstageofourgroup'sresearchondevelopingavaccineformalaria.B:Yes,itis.Anditseemed_______________allthetheorieswereuseful,butthefactwas_________wecouldn'tpersuadeoneanotherthatonetheorywasbetterthananother.C:ExactlyTheproblemwasnotabout______________allourtheorieswereequallygood,butindeciding.____________theorytodependupon.D:Werealisedthatwhatwecaredaboutwasnot_______________aspectweneededtodevelopatheoryin,butrather_________________wecanreducethecostofavaccinewithoutreducingitseffect!E:You'reright.Atlast,webecamefocusedonthekeyissue,whichwas___________wehadtoCaryouttheresearchinthefirstplace.asifthatwhatwhowhenHowwhywhosewhichwhetherwhatasifthatwhetherwhosewhichhowwhy

DavidistalkingtoMariaabouttheirscientificresearchproject.FirstcompleteDavid'slines(A-E,usingthewordsinthebox.ThenputDavid'slinesinthecorrectorderandpracticetheconversation.Maria:Thismixoftheoryanddataisoneofthekeycharacteristicsofwhatwecallscience.David:__A_____Maria:Withyourtheoreticalframework?David:__________________Maria:Decidingonatheoryisdefinitelyofcriticalimportance.David:_________________MariaThiswaswhenyoushouldhavecalme