高中英语 Unit5 Grammar课件 新人教版教材必修5 课件.ppt

Unit5Grammar为了使语言简洁或避免重复,
我们要怎样做呢?

本单元我们将接触一种新的语法现象为了使讲话和行文简洁，句中某些成分有时可以省略。省略可分为以下几种情况：1)(You)Comein,please.
2)(I)Seeyoutomorrow.
3)(I)Thankyouforyourhelp.
4)(I)Begyourpardon.1)(It)Soundsagoodidea.
2)(Willyou)Haveasmoke?
3)(Wouldyoulike)Somethingtodrink?
4)(Youcome)Thisway,please.可以省略宾语的全部;
可以省略作宾语的动词不定式,只保留to,但如果该宾语是动词be或完成时态,则须在to后加上be或have。1)---DoyouknowMissHu?
---Idon’tknow(her).
2)Don’ttouchanythingunlesstheteachertellsyouto(touch).
3)---Areyouateacher?
---No,butIwanttobe(ateacher).
4)---Hehasn’tfinishedthetask.
---Well,heoughttohave(finishit).---Areyouthirsty?
---Yes,Iam(thirsty).
2)Hisbrotherisn’tlazy.
Norishissister(lazy).1)---Areyoufeelingbetternow?
---(I’mfeeling)Better(now).
2)---Whendidyoureadthenovel?
---(Ireadit)Longago.
3)Let’smeetattheschoolgateasthe
sameas(wemet)yesterday.两个并列分句中，后一分句常省略与前一分句中相同的部分．1)(I’m)Sorrytohearthatyouareill.
2)(It’sa)Pitythatyoumissedsucha
goodchance.Theydonotvisittheirparentsasmuchastheyoughtto(visittheirparents).1.连词的that省略2.在某些状语从句中,当从句的主语与主句的主语一致或者从句主语为it，且从句谓语部分有be动词时,可省去“主语+be”部分3.不定式符号to的省略(4)某些使役动词（let,make,have）及感官动词（see,watch,hear,notice,observe,feel,lookat,listento等）后面作宾语补足语的不定式一定要省去to,但在被动语态中须将to复原。
Isawtheboyfallfromthetree.
Theboywasseentofallfromthetree.
Thebossmadeuswork12hoursaday.
Weweremadetowork12hoursaday.(5)主语从句中有动词do,后面作表语的不定式的to可带可不带。
Whatwecandonowis(to)wait.
(6)find当“发现”讲时，后面作宾语补足语的不定式符号to可带可不带。
Wefoundhim(to)workveryhardattheexperiment.
但如果是不定式tobe，则不能省略。
Shefoundhimtobedishonest.4.条件从句中有should,were或had时,可以省略if,但要将should,were或had提至句首。
IfIwereyou,Iwouldgiveitup.
WereIyou,Iwouldgiveitup.
Ifitwerenotforyouradvice,wecouldn’thavegotoverthedifficulties.
Wereitnotforyouradvice,wecouldn’thavegotoverthedifficulties.IfIhadhadtime,Iwouldhaverunroundthatlakeagain.
HadIhadtime,Iwouldhaverunroundthatlakeagain.
Ifthereshouldbeaflood,whatshouldwedo?
Shouldtherebeaflood,whatshouldwedo?Nowit’syourturntofindoutwhathavebeenleftout.Itdoesn’tmatter.8.Terribleweather!

9.Joiningusforadrink?

10.Goingtothesupermarket?Choos