动词不定式复习教学课件

动词不定式

九年级英语语法复习教学课件主讲人：黄牛蹄中学田忠勤动词不定式(to+v.)

概述：动词不定式todo没有人称和数的变化，在句中不能独立作谓语，可以在句子中作宾语、宾语补足语、状语、定语、主语、表语等。其否定式为：nottodo

①如果不定式动词为不及物动词，后面的介词千万不要省略

如：Ihavesomethingimportanttotellyou.

Maybetheyhavethreeroomstolivein.(1)作定语

②与被修饰词有主谓关系如：MrLiisalwaysthefirsttocomeandthelasttoleave.通常在agree，begin，choose，come，decide，expect，hope，fail，forget，happen，help，learn，like，love，mean，try，manage，offer，remember，plan，prepare，promise，refuse，want，wait，wish等后加todosth.做宾语。

(2)作宾语eg:IhavedecidedtogotoXinhuaPrimarySchool.

你知道有哪些动词后面可以跟动词不定式作宾语吗？说说看：eg:Myideaistoringhimupatonce.Myfather’sjobistomakesickpeoplebetter.

(3)作表语通常加在wish,hope,idea,job等词后作表语。

③动词help接动词不定式作宾语补足语，可带to也可不带to。如：Canyouhelpme(to)carrytheheavybag?

(4)作宾语补足语①动词+宾语+不定式allow，ask,beg,choose,expect,invite,tell,want,wish，等动词后接动词不定式作宾语补足语。如：Thepolicemenaskedhimtogetoffthebus.②hear,see,feel,watch,notice,let,make,have等动词后接不带to的动词不定式作宾语补足语。如：

WeoftenseeMissLicleantheclassroom.

Inthosedaysthebossesoftenmadetheworkersworkdayandnight.

eg:TolearnEnglishisveryimportant.

(5)作主语=It'sveryimportanttolearnEnglish.

形容词good,bad,polite,friendly,kind,foolishclever,right,wrong,careful等用“Itis+adj+ofsb.todosth.”其他形容词用for。

常用“Itis+adj+for/ofsb.todosth”的句式如：It‘sdangerousforyoutoridesofast.

It'sverykindofyoutohelpme.

表示目的、原因、方法、方向、结果等

(6)

作状语

如：I'llgotomeetmyfriendattherailwaystation.Heranfastenoughtocatchthebus.Sheistootiredtogofarther.(二)动词不定式的否定式：

nottodoTheteachertoldthechildrennottoplaywithfire.Theywarnthechildrennottoplayfootballinthestreet.

TherearesomanykindsofradiosonsalethatIcan'tmakeupmymindwhichkindtochoose.→TherearesomanykindsofradiosonsalethatIcan‘tmakeupmymindwhichkindIshouldchoose.

(三)．动词不定式与疑问句who,what,which,when,how,where,whether等连用,相当于一个从句。

常见词：decide,know,forget,learn,remember,show,understand,see,wonder,hear,explain,tell，findout,makeupone’smind等如：Idon'tknowwhentostart.→Idon'tknowwhenwe'llstart.特殊的非谓语动词

(1)可接不定式，也可接动词的-ing形式的动词

①意义差别较大的有：forget,remember,stop,goon等。

Heforgottoposttheletter.

Heforgotpostingtheletter.

Theystoppedtosingasong.Theystoppedsinging.

②意义有差别的有：watch,see,hear,notice,feel,like

(2)

只能接动词的-ing形式的动词或动词短语enjoy,finish,keep,mind,practise,suggest,bebusy,giveup,lookforwardto,prefer…to…等。

如：ThestudentsarebusypickingappleWouldyoumindmyopeningthedoor?中考链接1.

It’s

happy

for

me

__________

(have)

the

bike.

2.

They

prefer

__________

(stay)

at

home

rather

than

go

out.

3.

He

is

old

enough

__________

(join)

the

army.

4.

His

boss

made

him

__________

(finish)

the

work

after

five.

5.

His

plan

is

__________

(spend)

her

summer

in

Shanghai.

6.

Have

you

got

anything

__________

(say)?

7.

Do

you

know

when

__________

(start)

our

work?

8.

He

went

out

__________

(carry)

the

big

bag.

9.

__________

(do)

the

homework

at

school

is

our

duty.

10.

Mrli

told

me__________

(clean)

the

classroom

after

class.

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