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： 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
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.
13. ride—rode—ridden 14. eat—ate—eaten
第三组 ABC
1. know—knew—known 2. grow—grew—grown 3. throw—threw—thrown
4. fly—flew—flown 5. show—showed—shown
第四组 ABB
1. build—built—built 2. burn—burnt—burnt
3. mean—meant—meant
4. lend—lent—lent 5. send—sent—sent
6. spend—spent—spent
第五组 ABB
1. keep—kept—kept 2. sweep—swept—swept 3. sleep—slept—slept
4. leave—left—left 5. feel—felt—felt
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.
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.
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.
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
→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.
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.
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。
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
第一组 AAA
1. cost—cost—cost 2. cut—cut—cut 3. hit—hit—hit 4. let—let—let
5. put—put—put 6. set—set—set 7. read—read—read
第二组 ABC
1. break—broke—broken 2. choose—chose—chosen 3. speak—Байду номын сангаасpoke—spoken
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
【课堂练习】
B. goes around C. is going around D. was going around
(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 watch → watched
尾加-ed。
plant → planted
以不发音字母 e 结尾的动词 like → liked
在词尾加-d。
move → moved
以“辅音字母 + y”结尾的 study → studied
动词，先变 y 为 i，再在词尾
4. steal—stole—stolen 5. wake—woke—woken 6. forget—forgot—forgotten
—took—taken —gave—given —hid—hidden
10. drive—drove—driven 11. write—wrote—written 12. rise—rose—risen
→ Did you stay there for 10 days last month Yes, we did. / No, we didn’t. b. Mary had a delicious dinner yesterday evening.