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2023屆PAGE4PAGE專題二:主語從句主語從句的定義和功能用作主語的從句稱為主語從句(即一個句子作主語);由定義可知,主語從句在主從復(fù)合句中作主語。1.EG.(1)What

struck

me

was

that

they

have

all

suffered

a

lot.Whether

they

would

support

us

was

a

problem.That

you

are

coming

to

London

is

the

best

news

I

have

heard

this

long

time.Whenwearrivedoesn’tmatter.

Whatyousaidistrue.Whomwemuststudyforisaquestionofgreatimportance.2.找出下列句子中的主語從句及其引導(dǎo)詞,并且指出引導(dǎo)詞是否充當(dāng)成分,充當(dāng)什么成分。

1.

That

we

shall

be

late

is

certain.

2.

That

the

driver

could

not

control

his

car

was

obvious.

3.

It

is

certain

that

we

shall

be

late.

4.

It

was

obvious

that

the

driver

could

not

control

his

car.

5.

Is

it

possible

that

they

will

come

tomorrow?

6.

It

is

clear

that

he

was

telling

the

truth.

7.

It's

probable

that

we'll

be

a

little

late.

8.

What

caused

the

accident

is

a

complete

mystery.

9.

It

worried

her

a

bit

that

her

hair

was

turning

grey.

10.

It

shocked

me

that

Peter

didn't

tell

anybody

where

he

was.二、引導(dǎo)詞1)thatthat在引導(dǎo)主語從句的時候并沒有任何含義,而且在從句中也不充當(dāng)任何成分,但是一般情況下,是不可以省略的(一般只有賓語從句中的that可以省略)Eg:ThatyouarecomingtoBeijingisthebestnewsIhaveheard.2)whetherwhether的含義為“是否”,用來表示從句的不確定性,一般情況下不能換成if。Eg:Whethershewillcomeornotisstillaquestion.3)連接代詞可以引導(dǎo)主語從句的連接代詞有what,whatever,who,whoever,whom,whomever,whose,whosever,which,whichever等;這些連接代詞保留了自身的含義,因此在主語從句中可以充當(dāng)主語、賓語、定語、表語等成分,因此也是不可以省略的,例如:Whatcausedtheaccidentisacompletemytery.Whenwearrivedoesn’tmatter.

Whatyousaidistrue.Whomwemuststudyforisaquestionofgreatimportance.4)連接副詞可以引導(dǎo)主語從句的連接副詞有when,where,how,why等;這些連接副詞在主語從句中保留了疑問含義,因此也是不可以省略的。Eg:Whyhewaslateisunknown.it作形式主語替代主語從句為了避免頭重腳輕,大多數(shù)主語從句都可以用it代替作形式It

should

be

tested

whether

the

plan

good

ornot

.

a、It+be動詞+名詞+主語從句

Itis

a

pity

that遺憾的是It

seems

appears

that看來、似乎

Ittumsoutthat結(jié)果

It

is

of

great

importance

that非常重要

It

doesn'tmatter

that沒關(guān)系

It

strikes/

occurs

to

methat我突然想到

Itis

said

believedreportedthat

...結(jié)構(gòu)中主語不可提前。例如:

It

was

reported

that

a

war

between

the

two

countries

broke

out

It

happens

that

I

meet

my

old

fiend

in

the

cinema

It

occurred

to

me

that

作文里融入主語從句可以增加作文的句式多樣和高級。

注意事項①that引導(dǎo)主語從句放在句首時,that不可省,但在句末\t"/new/p955788/_blank"\o"更多口語內(nèi)容"口語中可省。如:

Thathewasillyesterdayisknownnow.②if引導(dǎo)主語從句時,只能用it作形式主語,放在句首,而將if引導(dǎo)的主語從句放到句末。如:

ItisuncertainifhewillleaveforBeijingtomorrow.④連接代詞引導(dǎo)主語從句只能放在句首。如;Whohasbrokentheglassisunknown.

2.Whathewantsisallhere.⑤主語從句中主句的謂語動詞一般用第三人稱單數(shù)形式,但what引導(dǎo)主語從句的主句謂語動詞的形式須根據(jù)句子的意思來判斷。如

1.Howheworkeditoutisstillasecret.

2.WhattheymakesinthisfactoryareTVsets.三、主語從句練習(xí)錦集完形填空makes

mistakes

must

correct

them.It

worried

her

a

bither

hair

was

turning

grey.It's

uncertainthe

experiment

is

worth

doing.we

can't

get

seems

better

thanwe

have.you

don't

like

him

is

none

of

my

business.we'll

go

camping

tomorrow

depends

on

the

weather.youcomeornotisuptoyou.makesmistakemustcorrectthem.wearrivedoesn’tmatter.surprisemethattheyhavesufferedalot.wewillgoforanoutingtomorrowremainsunknown.she

bought

so

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