强调句式 It is 还是It was

It is 可用于强调句、定语从句、主语从句等多种句型，举例如下：

一、It is(was)⋯⋯that⋯⋯句型, It is + 被强调成分 + that +句子剩余部分 （强调句）

可以分别用来强调主语、宾语、地点状语和时间状语。如：

1、It was he who( that)read three books in the library yesterday(强调主语)

是他昨天在图书馆读了三本书。

2、It was three books that he read in the library yesterday(强调宾语)

他昨天在图书馆读了三本书。

It was in the library that he read three books yesterday(强调地点状语)

他昨天是在图书馆里读了三本书。

二、It is +名词+定语从句

It was the day my grandmother was angry

那一天我外婆生气了。

三、It is +名词/形容词+不定式主语

It做形式主语，句子真正的主语是不定式。

It was a pleasure to draw pictures

画画是一种享受。

四、It is + no use + 动名词主语

It做形式主语，句子真正的主语是动名词 。

It is no use doing what you like; you have got to like what you do

做你喜欢的事是没有用的；你必须喜欢你做的事。

五、It is +名词/形容词+主语从句

It做形式主语，句子真正的主语是主语从句。如：

It was inevitable that the scent of flowers always reminded him of past events

这是不可避免的：花的味道总是让他想起过去的往事。

六、It 还用于指代时间、距离、价值、天气，以及不明确的人（包括性别不明的婴儿、敲门或打来电话的人。在不知道对方性别前，无法确定该用he还是she，往往用it）。

It was a bright cold day in March

这是三月的寒冷的一天。

1．作人称代词

John

likes

playing

Pingpong/

He

always

does

it

in

the

afternoon(指代上下文提到的事物)/It's

time

we

went

home

/

How

far

is

it

from

here

to

your

home

/

It

is

getting

warmer

and

warmer/

It's

very

quiet

at

the

moment(可指时间、天气、环境等)

2．作形式主语，代替由不定式、动名词或从句表示的真正主语。

It's

important

for

us

to

learn

a

second

language/

It's

no

use

talking

to

him/

It's

known

to

all

that

the

earth

goes

round

the

sun

3．作形式宾语，代替由不定式、动名词或从句表示的真正宾语。

We

feel

it

our

duty

to

help

others/

He

made

it

clear

that

he

would

leave

the

city

4．表示“喜欢、恨”等心理方面的动词后面接it，构成固定结构，这类动词有enjoy，prefer，love，like，hate，dislike，appreciate等。

I’d

appreciate

it

if

you

would

like

to

teach

me

how

to

use

the

computer如果你教我如何使用电脑我感激不尽。

强调结构：It

is

(was)

＋被强调部分＋that

(或who)．

注意：

在强调结构中，如被强调部分为时间状语或地点状语，应用that

。在复习中，一定要注意句式的不同。

It

was

in

Shanghai

that

I

bought

the

guitar

(that引起强调句)

It

was

Shanghai

where

I

bought

the

guitar

(where引起定语从句)

It

was

twelve

o'clock

when

we

arrived

there

(when引起时间状语从句)

It

was

at

twelve

o'clock

that

we

arrived

there

(that

引起强调句)

一般说来，强调结构it be…that…中的be的时态应与句子时态一致，即同时用现在时，或同时用过去时，有时也可能用将来时。如：It is not I who am angry 发怒的不是我。（同时用现在时）

It was my two sisters who knew her best 是我的两个姐妹最了解她。（同时用过去时）

It will not be you who will have to take the blame for this 对此须受责难的将不是你。（同时用将来时）

但有时也可以不一致，这主要见于强调结构用it is…that…（即用的是现在时），而句子用的是过去时。如：It is Miss Williams who enjoyed reading novels as a pastime 是威廉姆斯**以读小说来消遣。

itis加形容词todo是强调句式。itis是强调句型常规后面由that来引导，这是固定句式也是强调句式。这是一个it代替真正的主语，作形式主语的句型，真正的主语是动词不定式。动词不定式做主语，可以改写成it做形式主语的的句式。

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