Unit1ScienceandScientistsDiscoverUsefulStructures表语从句课件高中英语人教版选择性

NounClausesPredicativeClausesTheoutdooractivityseemsattractive.Theboyremainspuzzled.Thisisadiligentstudent.Hisjobistoteachchemistry.状态类：be感官类：feel/look/sound/taste/smell持续类：stand/remain/keep/stay变化类：become/get/grow/turn/go/come/run/fall似乎类：seem/appear结果类：prove/turnout是...可以接表语从句系动词有：......起来保持...变得...似乎、好像...结果是...;证明是...可以接表语从句系动词有：predicative表语是用来说明主语的身份、性质、品性、特征和状态。Theoutdooractivityseemsattractive.Theboyremainspuzzled.Thisisadiligentstudent.Hisjobistoteachchemistry.WhatdothesentenceshaveincommonintheirstructuresConductingexperimentsishisjob.Conductingexperimentsiswhathedoeseveryday.表语从句是指______________________,紧跟在________之后，对主语进行解释、说明，使主语的内容具体化。系动词在句子中充当表语的从句Findthepredicativeclause表从的连接词谢引引导词用法从属连词that无成分，无意义Whether无成分，意为“是否”连接代词what,

which,

who,whom,

whose,

wh+ever在从句中充当主语，宾语，表语，定语连接副词how,

when,

where,

whyhowever,whenever,wherever在从句中充当状语其它连接词 because,asif

,as

though 因为，好像，似乎表语从句的引导词表从中不用if1.从属连词that与whetherthat:在从句中不充当句子成分,无实际意义，一般不能省略。Thetruthisthathehasneverbeentothecountryside.whether：起连接作用，意为“是否，究竟，到底”在从句中不充当任何成分。Thequestioniswhetherwecanfinishtheexperimentbytomorrowafternoon.2.连接代词连接代词what,which,who,whom,whose等除在句中起连接作用外,在从句中还充当主语、宾语、表语或定语,本身具有词义。1.Tomisnolongerwhatheusedtobe.汤姆已不再是过去的他了。2.Thequestioniswhichofusshouldbeinchargeofthecompany.问题是我们中的谁应该主管公司。3.Theproblemiswhoissuitablefortheposition.问题是谁适合这个职位。4.Theimportantthingiswhosenameshouldbeputonthetopofthelist.重要的是谁的名字应该放在名单的最前面。Whathewantstogetiswhateveryouhave.Youcanbewhoeveryouwanttobe.

连接副词wherewhenwhyhow除在句中起连接作用外;在从句中还分别充当地点、时间、原因、方式状语，本身具有词义。

1.That'swhereIcan’tagreewithyou.

那就是我不能同意你的地方。

2.Thatwaswhenhewenttothegrocerystore.

那就是他去杂货店的时候。

3.ThisiswhySaraapologisedtomeaftertheconference.

这就是萨拉会后向我道歉的原因。

4.Thisishowtheyovercamethedifficulties.

他们就是这样克服困难的。3.连接副词where可表示抽象意义，意为“…的地方，…点”小试身手Theproblemis___________wecanfinishthetaskornot.Thequestionis________wecangetintouchwithhim.Themostpleasantthingoftherainyseasonis________onecanbe

entirelyfreefromdust.Runningmeansdoingthesamethingforawhile.Thatis________Idid’tenjoyrunning.Thequestionis_________causedtheaccident.Themostimportantthingis___________responsibilityitis.whetherhowthatwhywhatwhose表从的重难点Hefailedintheexam.That's_______hefeltfrustrated.feltfrustrated.failedintheexam.why

连接副词why做成分(状语)，有意义，不能省略1.表从中易错连接词whybecauseHefeltfrustrated.That's__________hefailedintheexam.becausefeltfrustrated.failedintheexam.

连接副词1.表从中易错连接词whybecausebecause做成分(状语)，有意义，不能省略Hefailedintheexam.That'swhyhefeltfrustrated.Hefeltfrustrated.That'sbecausehefailedintheexam.结构：因why果；

果because因

语意：各自表达的侧重点不同

1.表从中易错连接词whybecauseIlostthegame.Thereasonwas______Iunderestimatedmycompetitors.Thereason___Ilostthegamewas_____Iunderestimatedmycompetitors.Ilostthegame.Thatwas__________Iunderestimatedmycompetitors.名词reason作主语时，后面的表语从句表示原因时要用that引导。thatwhythatbecause2.表从中易错连接词that;becauseHeistoblame.That'sbecausehepassedaslipofpaperinclass.Heistoblame.Thereasonisthat

hepassedaslipofpaperinclass.Heistoblame.Hepassedaslipofpaperinclass.2.表从中易错连接词that;becauseTheyounggirlwithshorthairlooks________shewereaboy.asifasthough这个留短发的女生看起来像是个男生。与事实不符:表示对现在的虚拟，用一般过去式。3.表从中易错连接词asif/asthough李宇春Hetalksasifhe_________(be)tothemoon.hadbeen他说的好像去过月球一样。与事实不符:表示对过去的虚拟，用过去完成式。3.表从中易错连接词asif/asthoughDarkcloudsaregathering.Itseemsasifitisgoingtorain.看起来好像要下雨了。与事实相符:用正常的陈述语气。3.表从中易错连接词asif/asthoughasif/asthough引导的表语从句如果与事实不符，用虚拟语气;如果是事实或者有发生的可能性，用陈述语气1.Itsoundsasifsomeone___knockingatthedoor.(与事实相符)2.Tomlikestotalkbigasifhe______(be)animportantperson.(对现在的虚拟，用一般过去时，be动词用were)3.Hetalksasifhe_______becomepresidenttomorrow.(对将来的虚拟，用would/could/might+do)4.HetalkedaboutRomeasifhe______