高中英语选修六Unit4Grammar课件

The

use

of

“it”

(2)Unit

4

Grammar在上一单元我们已经讲解了it在句中可以用作许多成分,在本单元我们用图表的形式进行复习整理使同学们对it的用法有系统的掌握。以上是我们用图表的形式对it的用法进行的归纳，相信同学们已经对it的用法有了更清晰的认识。接下来我们对it在强调句中的用法做一小结。ObjectiveTo

learn

the

use

of

theemphatic“it”.Look

at

these

sentences

in

the

book.…

and

that

it

is

human

activitythat

hascaused

this

global

warming

rather

thana

random

but

natural

phenomenon.It

was

a

scientist

called

Charles

Keeling,who

made

accurate

measurements

ofthe

amount

of

carbon

dioxide

in

theatmosphere

from

1957

to

1997.All

scientists

accept

this

data.

They

alsoagree

that

it

is

the

burning

of

more

andmore

fossil

fuels

that

has

resulted

in

thisincrease

in

carbon

dioxide.Pay

attention

to

the

word

“it”.

“It”

isused

foremphasis.强调句型中,为了强调句子的某一成分

(通常是主语、宾语或状语),常用结构:It

is/was+被强调部分+that

(who)…原句:I

met

Tom

in

the

street

yesterday.①

It

was

I

who

(that)

met

Tom

in

thestreet

yesterday.yesterday.主语②It

was

Tom

that

I

met

in

thestreetyesterday.

宾语③

It

was

in

the

street

that

I

met

Tom④It

was

yesterday

that

I

met

Tom

inthe

street.

时间状语地点状语根据划线部分把下列句子变成强调句。Peter

lent

us

themoney.It

was

Peter

who

lent

us

themoney.They

want

money.It

is

money

that

they

want.All

this

happenedonMonday.It

was

on

Monday

that

all

thishappened.I

didn’t

hear

from

her

until

last

summer.It

was

not

until

last

summer

that

Iheard

from

her.Why

does

everyone

think

I

amnarrow-minded?Why

is

it

that

everyone

thinks

I

amnarrow-minded?1.Itwasnotuntil1920

regularradio

broadcastbegan.A.whileC.

thatB.

whichD.since2.

is

a

fact

that

English

is

beingaccepted

as

an

international

language.A.ThereC.

ThatB.

ThisD.

ItItwasabout600yearsago

the

firstclock

with

a

face

and

an

hour

handwas

made.A.

that B.

until C.

before D.whenIhate

when

people

talk

withtheir

mouths

full.A.

it B.

that C.

these D.themIlike

in

the

autumn

when

theweather

is

clear

and

bright.A.

this B.

that C.

it D.

oneSomeone

is

knocking

at

the

door,

butwhocan

be?A.

one B.

he C.

she D.

itIs

necessary

to

complete

thedesign

before

NationalDay?A.

this B.

that C.

it D.

heDoes

matter

if

he

can’t

finishthe

job

ontime?A.

this B.

that C.

he D.

it

worried

her

a

bit

that

her

hair

wasturning

grey.A.

That B.

It C.What D.ThisTheyhavemade

arule

in

theroom.A.

this;

not

to

smoke

B.

it;

smokingC.

it;

to

not

smoke D.

it;

not

to

smokeReview口诀：代词it本意它,既可指这又指那;时间天气均可指,谈到距离也用它;假主假宾均可作,强调句型跟that。it的用法：代词it；引导词it。我们如何区分it在句中的不同成分呢?speak

to

me.It’s

difficult

to

remember

all

their

names.形式主语,代替……It’s

very

quiet

in

the

café.

CircumstanceIt

rained

for

threedays.

WeatherHe

made

it

clear

that

he

didn’t

want

to形式宾语,代替……Quiz

II:

Discuss

the

following

sentencesand

tell

the

function

of

“it”.5.

It

was

nice

to

meet

you.形式主语,代替……It

was

on

Tuesday

that

Smithcame.用于强调句型中It’s

three

miles

from

here

to

thenearestgarage.

DistanceA

tall

man

stood

up

and

shookhands.It

was

captain

Jim.人称代词，代表前面提到的人I

hear

you

bought

a

new

bike.

Can

youshow

it

to

me?人称代词，代表前面提到的物It

was

five

o’clock

when

we

got

backhome

yesterday.

TimeIt

was

dirty

and

wet

below

the

shipwhere

the

slaves

were

kept.CircumstanceIt

was

on

this

coast

that

lots

of

hispeople

disappeared.

用于强调句型It

was

most

likely

that

one

third

ofthem

had

lost

theirlives.作引导词，在句中作形式主语，代替后面的从句写这本书的人就是玛丽。It

is

Mary

who

wrote

thisbook.这个就是长满了美丽鲜花的花园。It

is

the

garden

that

many

beautifulflowers

grow

in.