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