新教材2023版高中英语Unit1ScienceandScientistsSectionⅡLearningAboutLanguage课件新人教版选择性必修第二册

SectionⅡ

LearningAboutLanguage语法专项突破表语从句[自主感知]①Onetheorywasthatbadaircausedthedisease.②WhatJohnSnowshowedtotheworldwashowcholeracouldbeovercome.③Itseemedthatthewomanlikedthewaterfromthepumpsomuchthatshehaditdeliveredtoherhouseeveryday.④ThetruthwasthatthewaterfromtheBroadStreetpumphadbeeninfectedbywaste.⑤WhatSnowwasdeterminedtofindoutwaswhythe1854outbreakofcholerainLondoncouldhavecausedover500deathswithintendays.[自我发现]1．加黑处均引导________从句。2．加黑处________、________、________，that在句中只起连接作用，不作成分，无实际含义。3．加黑处________、________how,why在句中不仅起连接作用，且分别作________、________状语。表语①③④②⑤方式原因[语法规则]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Thetroubleisthatshedoesn'tknowhowtoadapttothenewschool.麻烦是她不知道如何适应新学校。2．whether引导的表语从句。ThequestioniswhetheryourparentswillsubscribetoyourplantotraveltoTibetthissummerholiday.问题是你的父母是否同意你暑假去西藏旅行的计划。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。①Theproblemiswhoiswillingtodefendforthesuspectinthecourt.问题是谁愿意为这个嫌疑犯在法庭上辩护。②Withtheeffortsoflocalpeople,thecityisnolongerwhatitusedtobe.在当地人的努力下，

这个城市不再是过去的样子。4．连接副词引导的表语从句。①Theproblemishowwecantransformourinitialdreamintoreality.问题是我们如何把我们的最初的梦想变成现实。②That'swherethefamousastronomerdisagreed.那就是这个著名的天文学家不同意的地方。5．because,asif/asthough等引导的表语从句。①That'sbecauseyoudon'tknowhowtohandlethiskindofcrisis.这是因为你不知道如何应对这类危机。②Itlooksasiftheyoungmanislikelytobeinchargeofthedepartment.看起来似乎这个年轻人有可能负责这个部门。[巧学活用1]——语法填空①[2022·全国甲卷书面表达]Whatisofgreatimportanceis________weindividualsshouldraiseourawarenessofenvironmentprotection,reducingourfootprintandlivingagreenlifestyle.②[2022·全国新高考Ⅰ应用文]Yourtakingmyinvitationintoconsiderationis________Iexpect.③[2022·新课标全国卷读后续写]Therealquestionis________youaregoingtoletthosefewpeoplestopyoufromdoingsomethingyoureallywanttodo.④[2020·全国Ⅱ卷]Thegoodnewsis________it'ssimpletolearnandcanbeworththeeffort.⑤Asiswell-knowntoall,theSpringFestivalis________thefamilyarereunitedandcelebratetheNewYear.thatwhatwhetherthatwhen三、注意事项

1．why和because引导的表语从句的区别。①Ididn'tphoneher,andthat'swhyshegotangrywithme.我没有给她打电话。那就是她生我气的原因。(强调她生气的这一结果)②Ididn'tphoneher,andthat'sbecauseIgotangrywithher.我没有给她打电话，

那是因为我生她的气了。(强调没打电话的原因)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。Thereasonwhytheinjectionneedsrepeatingeveryyearisthattheviruschanges.每年需要重新注射的原因是这病毒会变化。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点出发。[巧学活用2]——语法填空①IdrovetoZhuhaifortheairshowlastweek.Thisis________Ihadafewdaysoff.②Hewaslatetoday.Thisis________hegotuplate.③[2022·新课标全国卷读后续写]Thereasonwhyyous