译林版七年级英语下册ppt课件Unit-7-Grammar

Unit

7ActivitiesGrammarsmoke

v.吸(烟),抽(烟)takean

X-ray照X光cameran.照相机—

By

the

way,

may

I

borrowyourcamera?—

No

problem.顺便问一下ride

a

horse骑马I

could

notride

a

horseat

five.

Now

Ican.ride

a

bike骑自行车...

could

not

...Now

...

can

...playtennis打网球...

could

not

...Now,

...

can

...swim

/

have

a

swim游泳...

could

not

...Now, ...

can...fly

akite放风筝...

could

not

...Now, ...

can...Using

can

or

could

to

talk

about

ability.1.

We

use

can

to

talk

about

presentability.We

use

could

to

talk

about

ability

in

thepast.e.g.

Millie

can

speak

goodEnglish.Shirley

cannot

ride

ahorse.The

old

mancould

swim

across

theYangtze

River.2.

We

usecan,

could

ormay

to

askforpermission.

Could

sounds

morepolite

than

can.

May

isformal.e.g.

—

Can

I

borrow

your

bike,

Millie?Yes,

you

can.

Here

you

are.Could

I

smoke

here?Sorry,

I’m

afraid

youcan’t.May

I

use

your

mobilephone?Of

course

youmay.1.

can与couldcan

常用于口语中，表示非正式的请求，请求对象一般是家人或朋友。e.g.

—

Can

I

borrow

your

book,Simon?西蒙,我可以借一下你的书吗？—

Ofcourse.当然可以。Can

I

have

some

milk,

Mum?妈妈，我可以喝点牛奶吗？Yes,you

can.

好的。could是can的过去式。在口语中，could常用来代替can向对方更委婉地提🎧请求，用法上比can正式，可以用于向老师或长辈提🎧请求，这时could不表示过去，回答一般还是用can。e.g.Could

I

use

your

computer,

please?请问，我可以用一下你的电脑吗？Yes,you

can.可以。Could

I

hand

in

our

homework

later,Mr

Lin?林老师，我可以稍后交作业吗？No,you

can’t.不，不行。2.maymay也可以用来征求对方意见，意为“可以”，相当于could，用法也比can更正式，更礼貌，一般用于向陌生人或所尊敬的人请求许可。e.g.May

I

askyouaquestion?我可以问你一个问题吗？Yes,please.可以，请问。May

I

come

in,

Mr

Wu?吴老师，我可以进来吗？No,you

may

not.不行。Ask

and

answer

the

questionsusing

can,

could

or

may.Can

you

speak

Japanese?Could

you

play

the

piano

last

year?Can

you

cook?Could

you

use

a

computer

when

you were

three?5.

Could

you

ride

a

bicycle

when

youwere

veryyoung?6.

Miss

Lin,

may

I

come

in?The

students

are

going

to

South

Hill.Amy

is

talking

to

Mr

Wu

about

thetrip.

Complete

their

conversationwith

can,

could

or

may.A:

Can/Could/May

I

take

my

cousinShirley

with

us,

Mr

Wu?M:

Yes,

you

can/could/may

.

Butwe’llget

there

by

bike.

Can

she

ride

abike?A:

Yes,

she

can

.

South

Hill

is

a

goodplace

to

have

fun.

Can/Could/May

we

go

campingthere?M:

I’m

afraid

you

can’t

.A: I

see.

Can/Could/May

I

make

a

callon

your

mobile?

I

left

mine

at

home.M:

Of

course

you

can/could/may

.Bythe

way,

can

you

take

your

camerawith

you,

Amy?A: Noproblem.Using

What

and

How

to

express

strongfeelings.We

use

What…!

or

How…!

in

ashortphrase

to

express

strong

feelings

aboutsomeone

or

something.e.g.

How

dangerous!What

a

brave

man!We

make

sentences

with

What…!

andHow…!

like

this:Noun

phraseWhata

beautifulflower(it

is)!beautiful

flowers(they

are)!an

interesting

idea(he

has)!interesting

ideas(youhave)!nice

music(it

is)!adjectiveHowbeautiful(the

flower

is)!beautiful(the

flowers

are)!interesting(his

idea

is)!interesting(your

ideas

are)!nice(the

music

is)!(1)

what+a/an+形容词+可数名词单数（+主语+谓语）!e.g.

What

a

lovely

girl

she

is!What

an

easy

question

it

is!(2)

what+形容词+可数名词复数（+主语+谓语）!e.g.

What

interesting

films

they

are!(3)

what+形容词+不可数名词（+主语+谓语）!e.g.

What

important

news

it

is!(1)

How+形容词(+主语+连系动词)!e.g.

How

heavy

the

rain

is!(2)

How+副词(+主语+行为动词)！e.g.

How

quickly

the

boy

runs!The

girl

is

very

pretty.What

a

pretty

girlsheis!How

pretty

the

girl

is!The

flowers

are

verybeautiful.Whatbeautifulflowers

they

are!How

beautiful

theflowersare!The

cakes

areverydelicious.Whatdelicious cakes

they

are!How

delicious

thecakes

are!A.

How

tall

the

manis!B.

What

atall

man(he

is)!Millie

is

asking

Simon

what

he

knowsabout

Superman.

Help

Milliecomplete

the

conversation

withWhat

and

How.M:

What

can

Superman

do,Simon?S:

Superman

can

see

throughwalls.M:

How

amazing!

His

eyes

are

justlikeX-rays.S:

Yes.

He

can

also

burn

things

with

hiseyWesh.atM:

special

eyes

he

has!

Howabout

hisears?S：He

can

hear

things

faraway.M:

How

strange!

What

else

can

he

do?S:

He

can

stop

a

train

with

hishands.M:

How

strong

he

is!

Can

he

fly?S:

Yes.

He

can

fly

as

fast

aslight.M:

What

a

wonderful

man!I.What与How大转换。What

a

pretty

girl

she

is!How

pretty

thegirlis!How

difficult

the

questions

are!What

difficult

questionstheyare!How

big

the

factory

is!What

a

bigfactory

it

is

!What

a

clever

boy!How

clever

theboy

is

!How

tall

the

trees

are!What

tall

trees

they

are!What

interesting

books

they

are!How

interesting

the

books

are