人教版（2023）选择性必修第三册Unit 1 Art Discovering useful structures 不定式作表语课件(共25张PPT)

第第页人教版（2023）选择性必修第三册Unit1ArtDiscoveringusefulstructures不定式作表语课件(共25张PPT)(共25张PPT)

Unit1Art

Discoveringusefulstructures

Learningobjectives

Understandthefunctionandmeaningoftheinfinitivewhenusedasapredicate.

Distinguishthedifferencebetween-ingformandinfinitiveconstructions

Reviewtheuseofinfinitivesasobject,objectcomplement,attributive,adverbialandusethisstructurecorrectlytodescribetherelevantcontent.

Readthesesentencesfromtheprevioustextandfillintheblanksusingwordsfromthetext.Discusswithyourpartnerthefunctionoftheitalicisedinfinitives.

Discoverusefulstructures

1Perhapsthebest______tounderstandWesternartistolookatthedevelopmentofWesternpaintingoverthecenturies.

2DuringtheMiddleAges,the_________ofWesternartwastoteachpeopleaboutChristianity.

3Inthiswork,Monet's_____wastoconveythelightandmovementinthescene…

4_______wasnolongershowreality,butinsteadtoaskthequestion,“Whatisart”

way

purpose

aim

It

Introduction

Tobeadoctorishard.(不定式作________)

Hisworkistodriveacar.(不定式作________)

Iwanttotellyouastory.(不定式作________)

Shewasthelaststudenttoleavetheclassroom.(不定式作______)

Tellhimtoleaveherenextweek.(不定式作_______)

主语

表语

宾语

定语

宾语补足语

动词不定式不能单独作谓语，可以作主语、宾语、表语、定语、补语等。

Whydoeshecomesoearly

Discovery

Hisaimistotakethefirstbus.

1.结构

动词不定式可以放在be,become,sound,taste,prove等_______后面作表语。

2.功能

①Hisplanistocleantheroom.他的计划是打扫房间。

Thestudentsaretomeetattheschoolgatetomorrow.明天学生们将在学校大门口见面。

系动词

DiscoverandFind

Presentation

主语(事物)＋be＋不定式(作表语)表示主语的具体内容

主语(人)＋be＋不定式(作表语)表示将来，为“即将”之意。

DiscoverandFind

3.考点

Ourdutyistohelptheyoungchildrentogrowbetter.

Myworkistocleantheroomeveryday.

Thepurposeofeducationistodevelopafinepersonalityinchildren.

Whathehopedwastobeadmittedintotheuniversity.

Tip1：主语是以____________________________________________________________________________________________________________________________________________________________________________

_________________等目的，建议，愿望，做法，任务为中心的名词词组时，或者以_____________________表示时，一般用动词不定式作表语说明主语的内容。

difficulty,experience,habit,job,method,principle,problem,reason,risk,role,task,thing,wish,aim,suggestion,duty,hope,idea,intention,plan,purpose,way

advice,ambition,custom,challenge,business,desire,

what引导的名词性从句

动词不定式作表语，表示主语的内容。

主语常常是表示意向、打算、计划的词，如wish,idea,task,purpose,duty,dream,job等。

一般来说，动词不定式作表语往往表示具体的某个动作，多表示将来。

egHistaskistocorrectthesepapers.

（具体的将来的行为）

不定式作表语

注意：

不定式在作表语时，当前面的主语中有do的某种形式时，作表语的不定式可以省略to。

egWhatyoushoulddonextis(to)helphimwithhisEnglish。

Theonlythinghecandonowis(to)giveuptheplan.

1.我们需要做的就是怀有希望过好每一天。_____________________________________

2.他们试图做的是引起公众关注。_____________________________________________

3.晚上他做过的唯一的事是读报纸。________________________________________________

动词不定式作表语省略to的情况

Allweneedtodoisliveeachdaywithhope.

Whattheyattemptedtodowasdrawpublicattention.

Intheeveningtheonlythinghedidwasreadthenewspaper.

1.动词不定式(短语)作表语时，一般情况下不定式符号to不能省略，但当主句主语部分含有实义动词do的某种形式时，可省略作表语的动词不定式（短语）里的不定式符号to:

前有do后无to

2.系动词，如be、seem、appear、prove、turnout后面常接不定式作表语，表语若是“tobe+...”的形式，通常可以省略tobe。

动词不定式作表语省略to的情况

Heseems(tobe)depressed.＝Heappears(tobe)depressed.

Theplanproves(tobe)successful.＝Theplanturnsout(tobe)successful.

一．省to不定式的固定句型

1,hadbetter(not)do…Youhadbetterstayathome.

2,wouldratherdo...thando…I’dratherstayathomethangoout.

3,prefertodo...ratherthando…I’dprefertodieratherthansteal.

4,cannotbutdo只有Hecannotbutagree.

5,cannothelpbutdo...不得不…

Eg:IcouldnothelpbutrealizethatIwaswrong.

6,donothingbutdo...\nothingtodobut/exceptdo只能，只有

Eg:Ihadnothingtodobutwaitthere.

7,why(not)do...Whynotaskyourteacherforhelp

8,当主语部分有do，则表语可省to

Eg:WhatIwanttodoisrunaschool=Hiswishistorunaschool.

9,当两个或更多相同的不定式并列使用时，除第一个不定式带to外其余的不加。

Shetoldthechildtostaythereandwaittillshecameback.

注：如果两者有比较关系，那么每个不定式前都得加to

Totryandfailisbetterthannottotryatall.

动词-ing形式和不定式同样都可以充当表语，两者的区别在于不定式表达是具体或是将来发生的动作，而动词-ing形式则表示抽象的一般行为。

e.g.Hisjobisdeliveringtheletterstotheirdestinations.

MyjobistolookafterthesisterwhenMomiscooking.

动词不定式作表语和v-ing作表语的区别

不定式作表语强调的是一次性、具体的、将要发生的动作

动名词作表语强调的是一般性、抽象的、经常发生的动作

①Ourworkis(serve)thepeople.

②Myjobtodayis_______________(clean)thehouse.

.

Hisjobistopaintthewallswithintwohours.

Hisjobispaintingwalls.

目前的工作

日常的工作

serving

toclean

Matchthesentencehalvesandunderlinethekeywordsofthesubjectineachsentence.

1Theyoungsingersaidhisintentionofperformingthesongwas

2Thebestwaytodobusinessis

3Whatthesurvivorsattemptedtodowas

A.tobuildtrustbetweenyouandyourclient.

Btoachievepermanentpeacebetweentheirtwocountries.

C.tobuildamemorialtotheheroeswhosavedtheirlives.

D.tosharehisloveforrockmusicwithhisfans.

4Themainpurposeofarteducationinschoolsis

5Theaimofthetwoleadersattheconferencewas

6Forahumbleperson,oneofthehardestthingsmightbe

7Whenyouarefacedwithaseriousdecision,mysuggestionis

8Themotherbelievesherdutyis

9Allhewantedafteratiringdaywas

Btoachievepermanentpeacebetweentheirtwocountries.

E.tobeleftalone.

F.tocriticiseotherpeople.

G.toinspirestudentstobecreative.

H.tolistentoyourowninnervoice.

I.toraisehersontobecomeamanwithanoblemindandagenerousheart.

Summary

1.结构

动词不定式联系动词后面作表语。

2.功能

主语(事物)＋be＋不定式(作表语)表示主语的具体内容

主语(人)＋be＋不定式(作表语)表示将来，为“即将”之意。

3.考点

(1)目的，建议，愿望，做法，任务为中心的名词词组时，或者以what引导的名词性从句做主语时，一般用动词不定式作表语说明主语的内容。

(2)当主语包含定语从句且其先行词为代词all或者主语被only,first,one,least或形容词最高级修饰时。

(3)动词不定式作表语可用于被动语态，相当于can/could,should,oughtto,must，具有情态意义。(注意主动表被动的情况)

(4)动词不定式作表语可表示“同意、安排、命令、决定、劝告、愿望、

意愿、禁止、预期的结果”等。

1.Themottoofthelittleboywhowassufferingfromamusclediseasewas_______(live)onedayatatime.

2.Itisyou,includingyourcousin,that____________(blame)forthelossofthegoldenchance.

tolive

aretoblame

3.Medicalexpertssaythemosteffectivewaytopreventthespreadofdiseaseisforpeople________(wash)theirhandswithsoapandwater.

4.Thenextstepis________surethatyouknowexactlywhatisrequired.

5.Thepurposeofeducationis___________(develop)afinepersonalityinchildren.

towash

tomake

todevelop

1.Youknow，mygoalis________(lose)150poundsinthecomingyear.

2.Theboywas_____________(blame)forwhathehaddone.

3.Oneofthemostdamagingthingsaparentcoulddowas___________(punish)theirchildrenforpoormarks.

4.Thepurposeofeducationis_____________(develop)afinepersonalityinchildren.

5.Youappear___________________(travel)toquitealotof