一般现在时一般过去时一般将来时

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一般现在时一般过去时一般将来时

教学内容

知识点一:一般现在时

【知识梳理】

(1)一般现在时的基本结构和变化

1.一般现在时的结构

①be动词:主语+be(am, is, are)+其它。

. I am a boy.我是一个男孩。

②行为动词:主语+行为动词(+其它)。一般现在时主要用动词的原形表示,如果主语是第三人称单数,则在动词原形后加"-s"或"-es"

. He gets up early in the morning.

2.否定句和疑问句的变化

①be动词的变化:

A.否定句:主语+ be + not +其它。 He is not a worker.他不是工人。

B. 一般疑问句:Be +主语+其它。 ---Are you a student ---Yes. I am. /

No, I'm not.

C. 特殊疑问句:疑问词+一般疑问句。 Where is my bike

②行为动词的变化: 公司内部档案编码:[OPPTR-OPPT28-OPPTL98-OPPNN08]

A.否定句:主语+ don't( doesn't ) +动词原形(+其它)。 I don't like bread.

/ He doesn't like bread.

B. 一般疑问句:Do ( Does ) +主语+动词原形+其它。

---Do you often play football --- Yes, I do. / No, I don't.

--- Does she go to work by bike --- Yes, she does. / No, she doesn't.

C. 特殊疑问句:疑问词+一般疑问句。How does your father go to work

(注意回顾动词第三人称单数形式变化规则)

一般情况下在词尾加s help→helps, clean→cleans, play→plays, wear→wears,

give→gives; 以s, x, ch, sh结尾的动词在词尾加es dress→dresses, fix→fixes, watch→watches, finish→finishes;以“辅音字母加y”结尾的动词,把y变为i,再study→studies, carry→carries, fly→flies )

(2)一般现在时的用法

1.表示经常性或习惯性的动作或行为。常与always, sometimes, often, usually,

never等副词连用。

. I go to school every day except Saturdays and Sundays. My

mother often gets up at 6 o’clock.

2.表示现在的状态,能力,性格,个性。. My father teaches maths.

Lin Yan dances well.

3.表示普遍真理或客观事实。. The earth moves around the sun. The sun

rises in the east.

【注意】此用法如果出现在宾语从句中,即使主句是过去时,从句谓语也要用一般现在时。如:Our physics teacher said that light travels much faster than sound.

我们的物理老师说光的传播速度比声音的传播速度快得多,在时间、条件、比较等状语从句中,用现在时表示将来的动作,从句的谓语动词用一般现在时。

如:I will e-mail you as soon as I get to Beijing. 我一到北京就给你发邮件。

If you come this afternoon, we will have a meeting. 如果你今天下午能来,我们就开会。

【例题精讲】

例1. ——Who is that lady

——She’s Miss Green. She ____ us music, and she is so good.

A. taught B. teaches C. will teach

D. is teaching

例2. ——I think I’ll take a bus to the meeting.

——The bus If you ____, you will be late.

A. do B. have done C. will do

例3. Unless the weather ____, we will have to cancel the picnic.

A. improve B. improves C. improved D. will

improve

例4. We don’t know if our friend ____. If he ____, we’ll let you know.

A. comes; comes B. comes; will come C. will come;

comes

例5. Our geography teacher told us that the earth ____ the sun.

A. went around B. goes around C. is going around

D. was going around

【课堂练习】

1. Look! A dog ____ a blind man across the road.

A. leads B. lead C. is leading D. led

2. They usually ____ TV in the evening.

A. watch B. will watch C. are watching D. watches

3. He hardly ____ up early.

A. gets B. get C. doesn’t get D. don’t get

4. John ____ football.

A. likes playing B. likes play C. like play

5. Frank usually ____ in touch with his primary school teachers by email.

A. keep B. keeps C. kept D. will keep

知识点二:一般过去时

【知识梳理】

(1)一般过去时的基本结构和变化

1. 定义:表示过去某时发生的动作或存在的状态。

2. 结构:“主语 + 动词的过去式”

3.句型转化:

①be 动词的过去时的句型如下:

A. 否定句: 主语 + be动词的过去式(was, were)+ not…

B. 疑问句: be动词的过去式(was, were)+ 主语 …

a. He was busy yesterday. (肯定句) 他昨天很忙。

b. He was not busy yesterday. (否定句) 他昨天不忙。

c. Was he busy yesterday (疑问句) 他昨天忙吗

d. There weren’t any boys in the room.房间里没有男孩儿。

. There weren’t any boys in the room.房间里没有男孩儿。

Were there any boys in the room 房间里有男孩儿吗

②行为动词的否定式和疑问式:

A. 否定式:行为动词前加上did not或缩略式didn’t, 并把这个行为动词改为动词原形。

a. I called Lin Tao yesterday afternoon.

→I did not / didn’t call Lin Tao yesterday afternoon.

b. I borrowed a book from Sun Yang last Sunday.

B. 一般疑问式:若在陈述句中只有行为动词的过去式, 那就得在句首加上一个助动词did来帮助提问, 然后把句中的行为动词由过去式改为动词原形, 并在句末打上问号。回答时别忘了还用did。

a. We stayed there for 10 days last month.

→ Did you stay there for 10 days last month Yes, we did.

/ No, we didn’t.

b. Mary had a delicious dinner yesterday evening.

→ Did Mary have a delicious dinner yesterday evening

Yes, she did. / No, we didn’t.

?

(2)规则动词的变化

过去式(规则变化) 一般情况下,直接在动词词尾加-ed。 watch → watched

plant → planted

以不发音字母e结尾的动词在词尾加-d。 like → liked

move → moved

以“辅音字母 + y”结尾的动词,先变y为i,再在词尾加-ed。 study → studied

carry → carried

重读闭音节动词且词尾只有一个辅音字母,先双写词尾的辅音字母,再在词尾加-ed。 stop → stopped

shop → shopped

过去式(be动词)

(不规则变化) am / is → was are

→ were

do → did

(3)不规则动词的过去式和过去分词

第一组AAA

1. cost—cost—cost 2. cut—cut—cut 3. hit—hit—hit 4.

let—let—let