初中一般现在时【讲解+练习】.doc

一般现在时的用法
一、 概述
一般现在时表示习惯性、经常性、反复性的动作或存在的状态。“习惯性、经常性、反复性”是一般现在时的三大特性，它不表示特定时间内发生的事。
二、一般现在时的结构
时态的结构指的是动词的变化形式。一般现在时间有两种结构，一种是动词原形，用于主语为非第三人称时的情况；另一种为动词的第三人称单数形式，用于主语为第三人称时的情况。
Eg1.We often get up early in the morning.
Eg2.My father often gets up early in the morning.
三、谈谈“主语为三单，其后动词s添”
在一般现在时中，当主语为第三人称单数时，谓语动词要用第三人称单数形式。可以简单叙述为“主语为三单，其后动词s添”。何谓第三人称单数？用一句话概括就是“非你、非我、非复数”，如he, she, it, my father, my mother, my sister, our English teacher, Tom, Mike, Liu Jia, China, my book, etc.
Eg3.He sometimes goes to school by bike.
Eg4.My father works in the hospital as a doctor.
四、动词第三人称单数变化规则
动词第三人称变化的规则与可数名词复数变化的规则相同。
规则一、一般在词尾加-s。
如：looks, puts. reads, sees, skis等。
规则二、以-o, -s, -x, -sh, -ch结尾的加-es。
如：goes, does, misses, passes, mixes, fixes, pushes, wishes, watches, teaches,等。
规则三、以辅音字母加y结尾的，变y为i，再加-es。注意一定是辅音字母加y才变，若是元音字母加y，则直接加-s。
如：fly　→　flies,　try　→　tries,　fry　→　fries,　copy　→　copies
buy　→　buys,　enjoy　→　enjoys,　play　→　plays,　say　→　says,　pay　→　pays五、一般现在时的句子转换
（1） 当句子中有be动词或情态动词时，则把be动词或情态动词(can,could等等)提到主语的前面变成一般疑问句;在be动词或情态动词后面加not变成否定句.例：
①陈述句：She is a student.
一般疑问句→ Is she a student?
否定句→ She is not a student.
②陈述句：I can swim.
一般疑问句→ Can you swim?
否定句→ I can not swim.
（2） 当句子中即没有be动词，也没有情态动词时，则在主语前加助动词do (you,以及复数), does（单数she,he,it）变成一般疑问句；在主语后谓语动词前加助动词don’t（I,you,以及复数), doesn’t（单数she,he,it）变成否定句，助动词后的动词要变成动词原形。例：
①陈述句：We get up at 7:00 every morning.一般疑问句→Do you get up at 7:00 every morning?否定句→We don’t get up at 7:00 every morning.
②陈述句：She has a little brother.
一般疑问句→ Does she have a little brother?否定句→ She doesn’t have a little brother.

练习巩固
1.写出下列动词的三单形式
go__________ catch_________ brush（刷）_____ wash___________
do________ like________ have___________ watch________
drink ___________ fly___________ say_______ learn ___________
eat___________ read___________ sing___________ buy__________　　　　
study_______ stay __________ make __________ look ____
pass__________ carry ____ come__________plant(种植)______
teach_______ buy__________ wash_________ match _______
guess______ study______ finish_________ go________
snow______ carry_________ stop______ see________
drive ________let_______ carry______ keep_____
join______ find_______ think________ teach______ catch______
stay_______ begin______ forget_______ forget______
lie________ die _______ run_______ prefer______
give________ ring_______ dance______ hope_______
2.用括号内动词的适当形式填空。
1. We often___________(play) in the playground.
2. He _________(get) up at six o’clock.
3.__________you_________(brush) your teeth every morning.
4. What________ (do) he usually______ (do) after school?
5.Danny_______(study)English,Chinese,Maths,
Science and Art at school.
6. Mike sometimes __________(go) to the park with his sister.
7. At eight at night, she often__________(watch) TV with his parents.
8. ________ Mike________(read) English every day?
9.How many lessons_________your classmate________(have) on Monday?
10. What time_________his mother_________(do) the housework?
1. We often___________(play) on the playgound.
2. He _________(get) up at six o’clock.
3. __________you _________(brush) your teeth every morning.
4. What____ (do) he usually _____(do) after school?
5. Danny _______(study) English, Chinese, Maths, Science and Art at school.
6. Mike sometimes __________(go) to the park with his sister.
7. At eight at night, she ________(watch) TV with his parents.
8. ________ Mike________(read) English every day?
9. How many lessons ______your classmate____(have) on Monday?
10. What time ____his mother_________(do) the housework?
11. He often ______(have) dinner at home. 12. Daniel and Tommy___ (be) in Class One.
13. We____ (not watch) TV on Monday. 14. Nick _____(not go) to the zoo on Sunday.
15. They______ (like) the World Cup? 16. What ____they often ____(do) on Saturdays
17. Your parents________ (read) newspapers every day?
18. The girl______ (teach) us English on Sundays.
19. She and I _______(take) a walk together every evening.
20. There_______ (be) some water in the bottle. 21. Mike ______(like) cooking.
22. They_______ (have) the same hobby. 23. My aunt______ (look) after her baby carefully.
24. You always____ (do) your homework well. 25. I_____ (be) ill. I’m staying in bed.
26. She_____ (go) to school from Monday to Friday. 27. Liu Tao _____(do) not like PE.
28. The child often______ (watch) TV in the evening.
29. Su Hai and Su Yang ______(have) eight lessons this term.
30. －What day ______(be) it today? － It’s Saturday.
31. Don’t make a noise. Grandpa __________(sleep).
32. Tom’s family__________(watch) TV.
33. It ________(take) me two hours to finish my homework last night.
34. What ______ your mother _______(do) every evening? She _______(wash) clothes.
35. _______ it ______ (rain)every day?
36. What _______(do) you _______ on Sundays ? We ________ (play) football.
37. There ________ (be) a football match on TV every morning.
38. They often ________ (visit) the Great Wall.
39. Who _______ (dance) the best in your class?
40. He _____________ (not come).
41. The earth __________ (move) round the sun.
42 She ________ (buy) a sweater.
43. Mr. Wang often______( go) to Shanghai.

3.选择题
( )1. I ________to school at 7:00 in the morning.
A. go B. going C. goes
( )2. They _______books every day in the library.
A.reads B. read C. reading
( )3. The monkey________ eating bananas very much.
A.like B. likes C. liking
( )4. My father ________to read newspaper after supper every day.
A.like B. likes C. liking
( )5. I like watching TV, but my mother _________like it.
A. don’t B. doesn’t C. does
( )6. ____________ your father drink milk every day?
A.do B. are C. does
（　 ）7. We will go shopping if it____ tomorrow.
A. don't rain B. didn't rain
C.doesn't rain D. isn't rain
（　　）8. He said the sun ____in the east and ____in the west.
A rose; set B rises; sets
C rises, set D rise; sets
（　　）9.Wang Mei ____ music and often ____ to music.
A like; listen B likes; listens
C like; are listening D liking ; listen
（　 ）10. Jenny____ English every evening.
A has study B studies
C study D studied
4.改错
1. Is your brother speak English? ____ 2. Does he likes going fishing? __________________
3. He likes play games after class. ______4. Mr. Wu teachs us English. __________________
5. She don't do her homework on Sundays. _________________

5.把下列句子变成一般疑问句（并作肯定和否定回答）、否定句
1.My friends like playing soccer.
2.They speak English every day.
3.Daniel watches TV every evening.
4.John is from Canada.
5.Tom does his homework at home.
6.My dog runs fast.
7.Amy likes playing computer games.
8.She can play the piano well.
1. Do you often play football after school? (肯定回答)
2. I have many books. （改为否定句）
3. Gao Shan’s sister likes playing table tennis （改为否定句）
4. She lives in a small town near New York.改为一般疑问句
5. I watch TV every day. （改为一般疑问句）
6. David has a goal. （改为一般疑问句）
7. We have four lessons.（否定句）
8. Nancy doesn’t run fast （肯定句）
9. My dog runs fast. (一般疑问句)

单项选择：
1. There _____ an English film at the cinema now.
A. will have B. is going to have C. is going to be D. is
2. The picture _______ nice.
A. looks B. is looked C. look D. is looking
3. She ______ down and soon falls asleep.
A. live B. lain C. laid D. sits
4. They _____ the office in time very morning.
A. reach to B. arrived C. went D. get to
5. We shall go to Shanghai on business before you _____ back next week.
A. will come B. came C. would come D. come
6. The plane ______ over there.
A. is B. are C.am D. was
7. I see her ____ the room this morning.
A. to enter B. entered C. enter D. enters
8. The teacher ________us to come to school on time.
A. ask B. asking C. asks D. asked
9. John always ______ others.
A. help B. helping C. helps D. to help
10. He ______for eight hours every day.
A. working B. to work C. works D. worked
11. You’d better ______ at home and ______ your homework.
A. to stay, do B. stay, do C. to stay, to do D. stay, to do
12. He sits down and ______ a rest.
A. having B. have C. to have D. has
13. Uncle Wang never ______ a cake.
A. make B. to make C. making D. makes