外研版初二上英语知识点时态篇精讲

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外研版初二上英语知识点时态篇

一.主要时态

1.当有always,usually,often,sometimes,seldom,never,once a,every时用一般现在时态。

时态构成:

Be动词或行为动词

主语为第三人称单数时:动词用第三人称单数式(is、has、v+s/es);

主语为一、二人称时动词用原形。

否定形式:be动词(am、is、are)+not

行为动词前+don't

主语为第三人称单数+doesn't同时把行为动词还原成原形形式

一般疑问句:be提前

2.当有now,at the moment,look,listen时用现在进行时态。

时态构成:Be(am,is ,are)+v-ing

3.当有Tomorrow,the day after tomorrow,from now on,in+一段时间,some day,next时用一般将来时态。时态构成为:will+v.或be going to+v.

4.当有yesterday,......ago,last......,just now......用一般过去时

时态构成:v.+ed

二.重要时态

1.一般现在时:

时态含义:表示经常性、习惯性的动作、状态。

时态使用场合:

(1)表示经常习惯的行为状态

Nick doesn’t do his homework on Sundays.

I go to school by bus everyday.

(2)表示普遍真理和客观事实。

Beijing lies in the east of China.

The sun rises from the east.

(3)用于时间及条件状语从句中。

用于时间状语从句中(when、while、before、after、until、as soon as等引导):

I will phone you as soon as i get home.

用于条件状语从句中:If you smile to the world,the world will smile back.

If you are a tear in my eye,i will never cry.

(4)用于时间表中:如列车时刻表、航班出发时间表。

The train leaves for Beijing at 9 o’clock in the morning.

(5)用于倒装句,表立即要发生的动作。

Here comes the bus.

There goes bell/

There goes the sunshine,here comes the rain.

2.一般过去时:

时态含义:过去经常性、习惯性的动作;过去某时发生的动作或存在的状态。

时态使用场合:

在以下时间状语下:long long ago,once upon a time,in 1989,at the age of five,last year/month/week/night,the day before yesterday,yesterday,ago

(1)时态构成:be动词(was/were)或行为动词(v.+ed)

否定形式:be(was/were)+not

行为动词前+didn't同时把行为动词还原为动词原形

一般疑问句:be(was/were)提前;did提前同时把行为动词还原为动词原形。

例句:

We had a party last Friday.

The cat caught a bird last night.

I made a model ship with Mike yesterday.

He lived in Tianjin two years ago.

3.现在进行时

时态含义:表示说话时或现阶段正进行得动作、行为。

在以下时间状语下:

Now,at this time,at the moment,these days,look,listen.

时态构成:be(am,is,are)+v.-ing

否定形式:be(am,is,are)+not+v.-ing

一般疑问句:be提前

I'm listening to the music now.

Listen!Annie is singing in the classroom.

Look!Mr.lee is running on the playground.

It’s getting colder and colder.

4.一般将来时态

时态含义:将来某时要发生的动作或存在状态,将来经常、反复发生的动作。

以下时间状语下:

关键词:next (next day/week/month/term/year)

tomorrow (tomorrow morning/afternoon/evening/the day after tomorrow)

this (Friday/week/weekend/weekday),

in (in two days/years)

时态构成:will+v.

Be going to+v.

否定形式:will not+v.

Be not gong to+v.

一般疑问句:will/be提前

I will learn a new lesson today.

Maria will wash her clothes after seven.

John will stay in Shanghai for a week.

Will she come?

The meeting won’t last long.

We won’t be busy this evening.

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