七下英语三种时态

一．现在进行时的构成：Be+v+ing.助动词be的形式要根据主语的人称和数来决定。

1、现在进行时的标志：Look! Listen! Now等词

2、现在进行时的基本用法：

a. 表示现在( 指说话人说话时) 正在发生的事情或当前一段时间内的活动或现阶段正在进行的动作。

We are waiting for you.

I’m doing my homework now.

They are watching TV.

b. 习惯进行：表示长期的或重复性的动作，说话时动作未必正在进行。

Mr. Green is writing another novel(小说).

(说话时并未在写，只处于写作的状态。)

3、动词-ing的变形规则

1）一般情况直接加-ing。

Play—playing look—looking go—going

2）以不发音的e结尾，去e加ing。

Write—writing take—taking have—having (但请注意：see—seeing)

3）重读闭音节，双写末尾的字母，再加ing。

Swim—swimming put—putting run—running shop—shopping stop—stopping

练习二（用所给单词的适当形式填空）

1.Look!The grandma ________(run)after the grandson.

2.Listen!The students _______(sing)an English song.

3.Don’t go out.It___________(rain)hard now.

4.Tom _______(read) a book now.

5.The children _________(not listen) to the music now.

6.Are they _______(have) breakfast now?

7.Is your father _________(fish) now?

二．一般现在时的构成：①含be(is are, am, are) 动词的句子

②含实意动词的句子，如：have(has)

除第三人称单数由动词原形加词尾-s或-es构成外，其他一律用动词原形

一般现在时的标志：every day, usually, often, always, sometimes, never.

一般现在时的用法

1) 经常性或习惯性的动作，常与表示频腮度的时间状语连用。2) 客观真理，客观存在，科学事实。3) 表示格言或警句中。4) 现在时刻的状态、能力、性格、个性。

动词的第三人称单数变化

1、一般情况在词尾加-s

2、以字母s,x,ch,sh,o 结尾加-es

3、以辅音字母加y结尾的动词，先变y为i再加es

（用所给单词的适当形式填空）

1.We ______ (be) in the same city—Shenzhen.

2.There______(be)a ruler and four pencils in the box.

3.There______(be)four pencils and a ruler in the box.

4.She_______(have) black hair.

5.He _______(go) to school by bike every day.

6.Sandy usually______(get)up early in the morning.

7.My brother,Ken,________(watch)TV sometimes.

8.His father often_______(walk)after supper.

9.Does Peter_______(love)the new school?

10.Does the man_________(work) hard every day?

11.Do their parents usually ________(visit)China?

12.My aunt ________(not like) music in her spare time.

13.The students___________(not plant)trees every year.

三．一般过去时：

1.表示在确定的过去时间里所发生的动作或存在的状态。

2.表示在过去一段时间内，经常性或习惯性的动作。

3.一般过去时的标志：yesterday,yesteday evening,two weeks ago,last week,in 1995等。

4.动词过去式的变化

（1）规则变化

1）一般情况直接+ed 如：work-worked play-played

2）以e结尾的词只加-d 如：live-lived dance-danced

3）以“辅音字母+y”结尾的词，变y为i再加-ed 如：study-studied

4) 以重读闭音节结尾，且末尾只有一个辅音字母的词，先将这个字母双写，再加-ed. 如：stop-stopped plan-planned

（2）不规则变化

1.It __________(be)very hot last year.

2.We __________(be )in the North in 1987.

3.She _________(go)to class late yesterday morning.

st night I ______(do) my homework and________(have)a bath.

5.---How did you like the book?---I __________(like) it very much.

6. When______ you________(have)breakfast yesterday?

7.I ___________(not see)you yesterday.

8.There_____(be)three bottles of orange on the desk a moment ago.

9.Y esterday my cousin__________(write) a letter to me.

10.Where (do) you go just now?

11.When I was a child, I often (play) football in the street.

12.What (do)you (do)last weekend?

练习：

一、判断下列句子的时态，选择A﹑B或C填空。

A.现在进行时

B.一般现在时

C.一般过去时

1.He always likes playing the piano.( )

2.We are having an English classes now.( )

3.They often go home late.( )

4.Lucy danced the disco at the party last night.( )

5.I liked go to the zoo when I was young.( )

6.My teacher is friendly to us.( )

7.Look! They are playing football.( )

8.She was born in 1990.( )

9.I lost much money last night.（）

二、用所给动词的适当形式填空。

1. Listen! Mary _________ ( sing) now.

2. A young man __________ (run) on the playground now.

3. My mother _________(watch) TV play every day.

4. Old Bush ________(visit) China again last month.

5. I ______ (play) sports three times a day.

6. Look! Lucy and Lily ____________(read) books.

7. There _______(is) a football match yesterday afternoon.

8. Our class ______( go) to the zoo three days ago.

9.I ________ (do) my homework every evening.

10. We _______ (fly) kites in the park on Sundays.

11. My mother _____________ (clean) our room on Sundays.