牛津译林版必修三Unit2-IT的用法课件

The

Practical

Usages

of

“

”1Appreciation2is

never

too

old

to

learn.活到老,学到老。never

rains

but

it

pours(泼水).不鸣则已,一鸣惊人。takes

three

generations(代)tomake

agentleman.十年树木,百年树人1.

It2.

It3.

It用作代词（group1）用作形式主语（group2）用作形式宾语（group3）用在强调句型（group4）用在固定结构（group5）高考链接3

自主学习（I）

IT用作代词4IT常指先前已提到的事物，以避免重复。IT也可指代性别不详的人或指婴幼儿。IT指代日期、时间、天气、环境、距离、度量衡等。IT

&

ONEIT和ONE都表“一个”，代指前文提到的事物，但IT指“同一个”，而ONE指“同一类”，通常one之前或之后一定有修饰语来加以区别。I

had

a

good

pen,

but

I

lost

it

yesterday.

I’ll

buya

newone

tomorrow.1.---

Have

you

seen

a

whalealive?---Yes,I’veeverseen

.A.

that B.

it C.

such D.

one2.

I

was

disappointed

with

the

film

I

saw

yesterday.Ihadexpected

to

be

muchbetter.A.

that B.

this C.

one D.

it5

自主学习（II）

IT用作形式主语，真正主语：不定式、动名词或从句注意：It

is

useless

doing

sthIt

is

no

use

doing

sthIt

is

no

good

doing

sthIt

is

a

waste

of

timedoing61.Itisgood

you

to

have

given

me

so

much

help.D.

withA.

of B.

for C.

to2.

to

go

theretoday.A.

There

is

not

need

for

youC.

It

is

not

necessary

for

you7B.

Youneedn’tD.

It

is

no

need

for

youCompare:It’s+adj+for

sb

to

do

sth(事物)

It’s

+adj

+of

sb

to

do

sth

（人，带情感）

常考的IT 作形式主语 从句作真正的主语的四种句型1.

IT

+

vi.

+

clause

…(碰巧)she

wasn’t

in

that

day.2.

IT

+

be

+

n.

+

clause

…

It’s

a

puzzle

how

lifebegan.Trans.:8。It

happened

that生命如何开始的是个谜IT

+

be

+

adj

+

clause

…It

is

strange

that(很奇怪)he

should

say

so.IT

+be

+

done

+从句

据说、据报道、据信…

…It

is

said

/

reported

/believed

/

suggested that

…Itissuggestedthattheexperiment

(should)

bedone(do)

with

great

care.Compare:•is

known

to

us

all

is

that

theChineseGovernment

has

spared

no

efforts

to

protectthe

poor

fromhunger.••9is

known

to

us

all

that

theChinese...is

known

to

us

all

,

the

Chinese

…AsWhatIt自主学习（III）IT用作形式宾语1.Sb

+think

/

believe

/

consider

/

find

/

feel

/make

+

it

+

adj.

/

n.

+

to

do

/

doing

…

/clause

…2.有些表喜怒哀乐的动词如：hate,enjoy,dislike,appreciate,和短语如see

to(保证)，depend

on,take…for

granted(认为…理所当然)先用it作形式宾语，再接从句作真正的宾语。.10T/F11I

dislike when

you

whistle.(

F

)我不爱听你吹口哨。when

前面加itWe

really

appreciate

it

when

she

offered

tohelp

.(

T

)她来帮忙了，我们十分感激。He

feels

it

his

duty

helpothers.(

F

) help

前面加to

自主学习（IV ）

IT用在强调结构中强调句结构：It

is/was+被强调部分（主，宾，状语）

+that+剩余部分一般疑问句：Is

/was

it+被强调部分（主，宾，状语）

+that+剩余部分特殊疑问句：Wh-+is/was

it

that+剩余部分？固定强调句式：It

was

not

until…that…（直到…才…）12Exercises:Isitinthatfactory

“Red

Flag”

cars

are

made?A.

inwhich B.

where C.

that D.

whichIsitthefactory

you

worked

with

the

workers?A.

inwhich B.

there C.

in

that D.thatWhodoyouthink

has

won

the

first

prize?A.

that

is

it B.

that

it

is C.

it

is

that D.

is

it

that13

自主学习（V）

IT用在固定结构中It+is/has

been+一段时间+since

+v.(过去时)…自从

…已经有多少时间了It+will

be+一段时间+before

+v.(现在时)…还要多少时间才…---

What

was

the

party

like?---Wonderful.It’syears

I

enjoyed

myself

so

much.A.after B.

before C.when D.

since14IT用在固定结构中**

该是Sb做某事的时候了。It

is

time

(for

sb)to

do/that+(v.过去时/should

+do)…**

是Sb第几次做某事。It+be+the

first/second

time

that…(v.

完成时）**

做某事花了Sb…时间。It

takes

sb.

time

to

do

…It

is

time

that

we

cleaned/

should

clean

(clean)

thehouse.It

is

the

first

time

that

I

have

visited(visit)

the

Great

Wall.15Conclusion:16How

many

usages

of

“it”

have

welearned?

What

are

they?用作代词用作形式主语

用作形式宾语

用在强调句型中用在固定结构中高考链接

four

years

since

I

left

my

home

town.A.

It

was B.

There

was C.

There

is D.

It

is

isnogood

without

doing

anything.A.This,

talkingC.

It,talkingB.

It,

to

talkD.

That,

to

talkHis

father

kept

telling

him

that

he

should

work harder,but

didn’t

help.A.

it

B.

the C.

which D.

sheWas

intheroom

you

used

to work

you

found

the

secret

hiding

place?A.

it,

that,

th