Unit4Grammar課件英語牛津譯林版七年級(jí)上冊(cè)

Grammar（第四課時(shí)）1.表示時(shí)間的介詞

介詞at、in、on表示時(shí)間的用法：

（1）

at常用在某一時(shí)刻、三餐、年齡，以及正午、午夜、周末、某個(gè)特定的節(jié)日（不止一天）等單詞前。例如：

at

7:30

at

breakfast/lunch/supper

at

six/at

the

age

of

six

at

weekends

at

Christmas

（2）

on常用在星期幾、日期、具體某一天的上午、下午、晚上，以及特定的節(jié)日（一天）單詞前。例如：

on

Monday/Tuesday...

on

9

June

on

Sunday

morning/on

a

cold

evening/on

the

afternoon

of

May

5th

on

Teachers’

Day

（3）in常用在一天的上午、下午、晚上，季節(jié)，以及某月、某年的單詞前。例如：

in

the

morning/afternoon/evening

in

January/February...

in

spring/summer...

in

1998/2021...

【注意】在last、next、every等詞前面既不加介詞，也不用冠詞。例如：

every

Monday,

next

Friday,

last

Sunday【即時(shí)訓(xùn)練】Zhong

Nanshan

gave

a

talk

for

primary

and

middle

school

students

across

the

country

in

the

The

First

Lesson

___

September

1,

2020.BA.in

B.on

C.at2.頻度副詞

表示動(dòng)作發(fā)生的頻率的副詞稱為頻度副詞。頻度副詞按表示的頻率由小到大依次為：never（0%）→seldom（20%）→sometimes（40%）→often（60%）→usually（80%）→always（100%）

（1）

在句中的位置：一般放在be動(dòng)詞、情態(tài)動(dòng)詞或助動(dòng)詞之后，行為動(dòng)詞之前。例如：

My

father

is

always

very

busy.

我父親總是很忙。

Sally

often

walks

to

school.

薩莉經(jīng)常步行去學(xué)校。

I

will

never

change

my

mind.

我永遠(yuǎn)不會(huì)改變主意。（2）對(duì)頻度副詞的提問：常用howoften，意為“多久一次”。例如：Iusuallyhavebreadandmilkforbreakfast.（對(duì)畫線部分提問）→Howoftendoyouhavebreadandmilkforbreakfast【拓展】回答howoften引起的疑問句時(shí)一般用表示頻率的詞或短語，如always、usually、often、sometimes、never、everyday、onceaweek、twiceamonth等。

【即時(shí)訓(xùn)練】My

grandpa

___

sleeps

late.

He

often

walks

along

the

lake

at

6

o’clock

in

the

morning.CA.always

B.often

C.seldom3.Sandy

doesn’t

have

much

time

to

play

tennis.

桑迪沒有太多時(shí)間打網(wǎng)球。

have

time

to

do

sth意為“有時(shí)間做某事”，與have

time

for

sth同義。例如：

I

don’t

have

time

to

play

computer

games.

=I

don’t

have

time

for

computer

games.

我沒有時(shí)間玩電腦游戲。

【拓展】類似短語：have

money

to

do

sth意為“有錢做某事”，相當(dāng)于have

money

for

sth?！炯磿r(shí)訓(xùn)練】

I

have

money

_______（buy）

these

books.to

buy基礎(chǔ)達(dá)標(biāo)一、選用介詞at、on或

in填空。1.In

Beijing,

it

is

very

cold___

winter.in2.She

likes

doing

some

running

___

the

morning.in3.Children

in

China

start

school

___

the

age

of

6.at4.Whatdoyouoftendo____Teachers’Dayon5.____

October

1,

we

celebrate

National

Day

in

China.on6.We

begin

our

lessons

___

eight.at7.We

plant

trees

___

March

every

year.in8.She

was

born

___

2009.in9.My

mother

and

I

often

go

shopping

____

Saturday

afternoon.on10.We

usually

have

a

party

for

the

New

Year’s

Day

____

the

night

of

December

31.on二、根據(jù)句意，從方框中選擇合適的頻度副詞填空。每詞限用一次。never

seldom

sometimes

often

usually

always1.Millie

likes

doing

exercise.

She

______

runs

after

school.often2.Amy

gets

up

early

every

day.

She

is

______

late

for

school.never3.My

father

is

busy

with

his

work,

so

he

_______

has

time

to

chat

with

me.seldom4.Linda

usually

goes

to

school

by

bike,

but

__________

she

takes

a

bus

when

it

rains.sometimes5.Mr

Black

is

very

nice.

He

_______

helps

us.always6.—Howlongdoesthejourney_______take—About10hours.usuallynever

seldom

sometimes

often

usually

always三、單項(xiàng)選擇。1.We

have

two

English

lessons

________

Wednesday

morning.(

)

BA.in

B.on

C.at[解析]

表示“在具體某一天或具體某一天的上午、下午和晚上”均用介詞on。2.Lily

is

a

good

girl.

She

________helps

others.(

)

CA.seldom

B.never

C.always3.—Whenandwherewereyouborn—Iwasborn________20October,2006________Nanjing.()AA.on;

in

B.on;

on

C.in;

on[解析]

表示“在具體某一天”用介詞on；表示“在某個(gè)地方（大地方）”用介詞in。4.Mr

Brown

is

60

years

old

but

he

plans

to

learn

to

drive________

next

year.(