Unit 1 Science and Scientists 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

Unit1ScienceandScientists

’Step1Lead-inMakingsentencesaccordingtothepictures.Hisdiarrhoeaseemssevere.Thetwopoliciesarecontradictory.Thisisawaterpump.Hisjobistohandletheproblem.Whatdothesentenceshaveincommonintheirstructures?predicative表语是用来说明主语的身份、性质、品性、特征和状态的，表语常由名词、代词、数词、动词过去分词、动词的-ing形式、副词、介词短语、形容词、不定式和从句等来充当。Hisdiarrhoeaseemssevere.Thetwopoliciesarecontradictory.Thisisawaterpump.Hisjobistohandletheproblem.twocontradictorytheoriesTheoryone:__________________causedbybadairTheorytwo:__________________causedbygermsOnetheorywasthatbadaircausedthedisease.

__________________主语系动词

表语从句表语从句是指______________________,紧跟在________之后，对主语进行解释、说明，使主语的内容具体化。从句在句子中充当表语系动词’Step2LearningAims1.理解:表语从句的结构及意义；2.掌握:表语从句的连接词及使用规则；3.运用:表语从句去表达自己的想法。’Step3LearningContents1Link-v2表从引导词3表从的运用系动词1LinkingVerbs系动词be动词感官类变化类am,is,arelook，sound，smell，taste，feel，seem变得：become、get、turn、grow；保持：keep、hold、stay、stand;仍然：remain可以接表语从句系动词有：从句引导词21.从属连词that引导的表语从句Thefactisthathewaslying.Thereasonisthattheynevergiveup.Hissuggestionisthatweshouldtellhim.

Oneideaisthatfishisthebestbrainfood.that仅起_______作用，______(有/无)词义，______(是/否)充当句子成分，通常________(能/不能)省略。无不能不连接1.从属连词whether引导的表语从句Thequestionisifwecanfinishourwork.Thequestioniswhetherthefilmisworthwatching.

Thedoctor’sdoubtiswhethershewillsurvive.

whether起_________作用，意为“_______”，在句中_________(是/否)作成分。(注意：if______(能/不能)引导表语从句)。连接是否不不能1.从属连词asif/asthough/because引导的表语从句Itsoundsasif/thoughsomeoneisknockingatthedoor.Shelookedasifshehadbeenhitbylightning.Itseemsasifsheweremad.Hedidnotseethefilmlastnight.Thatis

becausehehadseenitbefore.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)；because在从句中_______(是/否)充当成分，意为“______________”不似乎；好像虚拟语气一般过去过去完成不因为表语从句的虚拟语气

一坚持（insist)

二命令（order,command)

三建议（advise,suggest,propose)

四要求（ask,require,request,demand)当主句的主语是表示建议、命令、要求等后面的表语，那么表语从句应该用虚拟语气，即谓语动词用“should+动词原形”，should可省略。

Hissuggestionisthatshe________________(keep)quiet.Myadviceisthatwe_______________(ride)tothepark.(should)keep(should)ride2.连接代词what(ever),which,who(ever),whom(ever),whose等引导的表语从句

Myhometownisnolongerwhatitusedtobe.

Theproblemiswhowecangettoreplaceher.Theproblemiswhoseworkisthebest.Thequestioniswhatcausedtheaccident,thepoorwhetherortheheavytraffic?

连接代词在句中起_______作用，还在从句中还充当______、______、______、_______,______(有/无)意义，________(能/不能)省略。连接表语宾语定语主语有不能3.连接副词when,where,how,why引导的表语从句Theproblemishowwecanfindhim.ThatiswhereIfirstmether.That'swhyIobjecttotheplan.Thanksgivingiswhenpeoplecelebratetheharvest.连接副词在句中起________作用,还在从句中充当_______,_______，______，_______状语，________(能/不能)省略。连接方式地点原因时间不能1.Mybeliefis______________Iwillsucceedbyworkinghard.2.Themostpleasantthingoftherainyseasonis________onecanbeentirelyfreefromdust.3.Theproblemis______________wecanfindthemthere.4.Youcanbe__________youwanttobe.5.Thequestionis____________causedtheaccident.6.Themostimportantthingis____________responsibilityitis.7.Thisis____________Idon'tagreewithyou.8.Thequestionis_______________wecangetintouchwithhim.9.Thatis_________Igotwetthrough.

whetherthatthat【即学即练】使用合适的关系词补全句子。whoeverwhatwhosewhywhether/howwhy表语从句的引导词从属连词在从句中不作句子成分连接代词在从句中作主语、宾语、表语、定语连接副词在从句中作状语whenwherewhyhowwhat/whateverwhich/whicheverwho/whoeverwhom,whose...that,whetherasif/asthoughbecauseSummaryTestforgoals1.

This

is________Iwant.2.

MyEnglishislimited.Thisis_______IhatereadingEnglishbooks.3.

Thevillageis_________Iusedtospendmyholiday4.

Heismyfavoritesinger.

It

is_________I

reallylovethewayhebehaves.5.Thetrouble

is_______weareshortoffunds.6.Myproblemis________coatissuitableforme.

7.

I'd

liketostartmyownbusiness---that's________Iwanttodoif

Ihadthemoney.8.WhatIwanttoknowis______willsupportme.9.Helooked_________hewereill.10.

Pleaseputthemedicineonthetopoftheshelf.It’s_______ourchildrencan’treachit.11.Theproblemis________wecanfindtofinishthistask.whatwhywherebecausethatwhichwhatwhoasifwherewho【单句语法填空】【高考真题我不怕】1.［2013·安徽］Fromspace,theearthlooksblue.Thisis_________aboutseventy-onepercentofits

surfaceiscoveredbywater.2.［2014·四川］Grandmapointedtothehospitalandsaid,"That’s

__________Iwasborn．"3.［2014·北京］Thebestmomentforthefootballstarwas_________hescoredthewinninggoal.4.[2018·江苏]

Byboatistheonlywaytogethere,whichis

wearrived.5.[2018·北京]

Thisis

myfatherhastaughtme—toalwaysfacedifficultiesandhopeforthebest.6.[2021·新高考1卷]Theamazingthingaboutthespringis________

thecolderthetemperaturegets,thehotterthespring!becausewherewhenhowwhatthat【语法填空】Thefactis1.

Wendywasafamouswriter，butnooneknew2.

shecamefromandthequestionremained3._________shewasbornin1961