【课件】Unit+1+Discover+Useful+Structures人教版（2019）选择性必修第三册

DiscoveringusefulstructuresUNIT1ARTContentsⅠⅡ

HomeworkIIIIVObserveandDiscoverPracticeandApplyLeadin【P5activity1】Readthesesentencesandfillintheblanksusingthecorrectwordsfromthetextonpages2and3.Perhapsthebest_____tounderstandWesternartistolook

atthedevelopmentofWesternpaintingoverthecenturies.DuringtheMiddleAges,the_______ofWesternartwastoteachpeopleaboutChristianity.Inthiswork,Monet’s____wastoconveythelightandmovementinthescene...___________________________wasnolongershowreality,butinsteadtoaskthequestion,“Whatisart?”waypurposeaimWhattheyattemptedtodo动词不定式在句中作表语1.结构

动词不定式可以放在

be和become,sound,taste等__________后

面作表语，由“to+动词原形”构成。2.功能Perhaps_______________________________________________thedevelopmentofWesternpaintingoverthecenturies.

也许，了解西方艺术的最好方法就是回顾若干个世纪以来西方绘画的发展。____________________________yourfatherforhisopinion.

我的建议是问问你父亲的意见。系动词thebestwaytounderstandWesternartistolookat

MysuggestionistoaskObserveandDiscover动词不定式动词不定式作表语Tip1：主语是以__________________________________________

_______________________________________________________________________________________________________________等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。problem,task,wish,aim,suggestion,duty,hope,idea,intention,plan,purpose,way动词不定式difficulty,experience,job,method,what引导的名词性从句有时，根据表达的需要，在作表语的不定式前，还可添加疑问代词或疑问副词，包括what,who,how,when,where等。例如：Theproblemwashowtobegin.ObserveandDiscoverTip2：当主语包含定语从句且其先行词为代词_____或者主语被___________________或形容词________修饰时，其后可接“系动词+不定式”作句子的表语。ObserveandDiscoverAllhewantedwas_______________.

他只想一个人待着。TheleastIcandotohelpis________________.

我所能帮的最起码的事是借给她一辆车。tobeleftalonetolendheracarallonly,first,one,least最高级动词不定式Tip3：动词不定式作表语可用于被动语态，相当于___________________________________，具有情态意义。Theregulationsare__________________.=Theregulationsmustbeobserved.Youare_______________.=Youshouldberewarded.tobeobservedtoberewardedcan/could,ObserveandDiscover动词不定式should,oughtto,mustTip4：动词不定式作表语可表示“___________________________________________________________”等。⑦Youmustbepatientandpersistentifyouare___________.(愿望)如果你想成功，你必须有耐心和恒心。⑧Youare_________aface-to-facetalkwiththem.(劝告)

你必须得和他们进行一次面对面的谈话。意愿、禁止、预期的结果tosucceedtohave同意、安排、命令、决定、劝告、愿望、ObserveandDiscover动词不定式Tip5：某些动词不定式(短语)作表语时，需用主动形式表示__________。⑨Whois_____________thefire?

谁应为这场大火承担责任？⑩Thehouseis_________.

此房出租。toblamefortolet被动意义ObserveandDiscover动词不定式动词不定式作表语省略to的情况ObserveandDiscover3.晚上他做过的唯一的事是读报纸。Allweneedtodois

live

eachdaywithhope.Whattheyattemptedtodowas

draw

public

attention.In

the

evening

theonlythinghedidwas

read

the

newspaper.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:

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。_________________________________________________________________________________________________________________________________________________________________ObserveandDiscover动词不定式和v-ing作表语时，要注意与句子的主语在形式上保持一致，即若句子的主语为v-ing，则表语也应使用v-ing；若主语为动词不定式，则表语也应使用动词不定式。Toseeistobelieve.=Seeingisbelieving.动词不定式作表语和v-ing作表语的区别动词不定式和v-ing作表语时可换用，但以下情况除外:当动词所表达的是某一特定的行为，尤其是将来的行为或有待于实现的行为时，通常用动词不定式作表语。Herbestwishistoputhernewideasintopractice.若动词所表达的并不强调动作，而是表示主语的内容，则通常用v-ing作表语。Myfavoritesportisswimming.WhatIhatemostisbeinglaughedat.Ⅰ.单句语法填空Themostmeaningfulthinghewantstodois______(help)thepoor.Thisyear,hisplanis_______(make)somechangesintheteachingmethod.WhatIsuggestis

_______(start)workatonce.Oneofherhobbiesis

_________(collect)stamps.Ithinkitisyourbrotherwhois_______(blame)fortheaccident.

helptomaketostartcollectingtoblame即学即练PracticeandApplyPracticeandApply即学即练Youare______________(reward)

ifyouhavemadeabreakthrough.Throughmyyearsofschoollife,I’velearnedthatifweare________(make)

adifferenceinlife,it’sofgreatimportancethatweshouldbeginwithsmallthings.Thestudentstrustherverymuch;

asaresult,

heradviceis__________(influence)

theirdecisions. toberewardedtomake

toinfluencePracticeandApply即学即练Ⅱ.翻译句子1.对敌人仁慈就是对人民残酷。___________________________________________________2.我的主要目的是指出这件事的困难。

___________________________________________________3.我建议推迟会议。

__________________________________________________________Tobekindtotheenemyistobecrueltothepeople.Mychiefpurposeistopointoutthedifficultiesofthematter.WhatIwouldsuggestistoputoffthemeeting.【P5activity2】Matchthesentencehalves.PracticeandApply【P5activity2】Underlinethenounsorclausesusedasthesubjectineachsentence.Explainthemeaningsofthecompletesentences.Theyoungsinger’sintentionofperformingthesongwastosharehisloveforrockmusicwithhisfans.Thebestwaytodobusinessistobuildtrustbetweenyouandyourclient.Whatthesurvivorsattemptedtodowastobuildamemorialtotheheroeswhosavedtheirlives.Themainpurposeofarteducationinschoolsistoinspirestudentstobecreative.PracticeandApplyTheaimofthetwoleadersattheconferencewastoachievepermanentpeacebetweentheirtwocountries.Forahumbleperson,oneofthehardestthingsmightbetocriticiseotherpeople.Whenyouarefacedwithaseriousdecision,mysuggestonistolistentoyourowninnervoice.Themotherbelievesherdutyistoraisehersontobecomeamanwithanoblemindandagenerousheart.Allhewantedafteratiringdaywastobeleftalone.PracticeandApplyChoosefivesentencesfromActivity2onpage5andaboveexamples,andrewritethemaccordingtoyourownidea.PracticeandApplySharethesentenceswithyourpartnerandthenwiththeclass.【P5Activity3】Makeconversationsusingthefollowingquestionsandsentencepatterns.What’syourbiggestdream/ambitioninlife?Howareyougoingtomakeyourdreamcometrue?Howareyougoingtoachieveyourgoal?Doyouhaveanyplans?Whatmightbedifficultforyou?Howareyougoingtodealwith...?WorkinpairsPracticeandApplysampleconversationA:What’syourbiggestambitioninlife?B:MybiggestambitioninlifeistorunaninternationalmarathoninBeijing.A:Wow,thatsou