定义：表示经常发生或习惯性动作；表示客观事实或普遍真理；表示现在的状态( am / is / are )；表示主语具备的性格( like )、能力( can )等。
它经常与always, often, usually, sometimes, seldom, never（表示频度）; day/week/month/year/night/morning/afternoon…等时间状语连用。
★ 主语如果是第三人称单数，行为动词要加s/es, 助动词用does词原形)。主语如不是第三人称单数，则动词用原形，助动词用do★主语+V.s/es(主语是三单，go/finish/watch/pass/teach/do+es, cry / carry / try / fly / study +ies)
用法：1. I often go to work on foot. →I _______( don’t / didn’t )often go to work on foot.
2. He usually watches TV after supper. →
He ___________( don’t / doesn’t ) usually watch TV after supper.
3. There _________( be )some milk in the bottle.
4. There __________( be ) many people in the shop last night.
5. __________( Do / Does ) Tom’s father often go to work on foot?
6. ___________( Do ) the young man play basketball every day? 对划线部分提问)
________ ________ _________ it _________ you to get to school?
8. She does her homework at home. (改为否定句)
She ________ ________ her homework _________ ________. 对划线部分提问)
_________ _________ the students __________ _________?
10. Sandy works some hours every day. (改成一般疑问句)
_________ Sandy _________ __________ hours __________ day?
练习：1. Sometimes he__________(have) lunch at school.
2. Jim often __________( go ) to school by bike.
3. He __________( read ) English every morning.
4. My parents usually____________(watch) TV at home after supper.
5. _________( Do )Mr. Green go shopping every day?
6. There __________( be ) some new books on the desk.
7. They seldom__________(play) computer games.
定义：表示此刻正在进行或发生的动作（事情）。它经常与now, listen, look, at the moment连用，也和表示现在的具体时间连用(It’s 7 o’clock now.)
注意：1、动词以e结尾的，先去e后加ing; (make, write, give, ride, have, skate)
2、双写后一个字母再加ing.(run, swim, cut, put, shop, plan, sit, get, stop) 结构：主语+. ing / 主语+isn’t/aren’t/am not +V.ing.
★ What is / are sb. doing ? ( 某人正在做什么？)
用法：1.They are playing football now. → They ______ _______football now. (否定)
2. She is having lunch with her family. →
_________she _______lunch with her family?
→What _________he ________now? 练习：1. Now they ______________(dance) in the platform.
2. 3. Those boys ______________(swim) in the river.
4. Don’t make so much noise. The baby____________(sleep).
5. It’s half past seven. The Greens _____________(have) breakfast.
6. He is always__________(talk) in class. (be always doing sth.)
7. --Where is your father? --He ____________(water) flowers in the garden.
8. I must___________(go) .
9. –What are you____________(do) now? --I’m writing a letter.
10. Look! Lisa and Tim ____________ (read) in the classroom.
定义：表示过去发生的动作( did ) 或存在的状态( was / were )，常与表示过去的时间连用，如: ①yesterday, the day before yesterday, yesterday afternoon;
night / week / year/ term / winter / Sunday / Saturday / Friday…;
④一段时间+ago: two months ago, 注意：be动词的过去式: am / is→was / wasn’t, are→were/weren’t;
用法：1. Jim went to school by bike last winter. →否定
Jim_______ ________ to school by bike last winter.
2. 3. There 4. --When___________( be ) he born? --He _______( be )born in 1998.
________ ________she ________to the park last week?
________ ________they _________in the shop an hour ago?
7. We had a good time at the party last night. ( 一般疑问句 )
________ _________ _________a good time at the party last night?
8. They often play basketball. ( 用yesterday改写 )
They __________ basketball yesterday.
9. She goes shopping every Sunday.（用last Sunday改写句子）
She _________ shopping _________Sunday.
10. Peter’s mother cleaned the house yesterday . (改为否定句)
Peter’s mother__________ _________ the house yesterday.
练习：1. The Blacks ______________(be) in America last year.
2. There____________(be) much rain 3. ___________( Do ) you go to work on foot ?
4. You_____________(not fly) kites in the park .
5. The young woman ____________(have) a good trip 6. My brother _________( have ) lunch at school .
7. She often _____________ ( run ) when she young.
8. I ____________( can not ) swim when I __________( be ) ten years old.
9. He __________( buy ) a black T-shirt .
10. They ___________( go ) to the zoo by bike
定义：表示将来某个时间要发生的动作或存在状态。它经常与表示将来的时间状语连用，如tomorrow, next week/year/term/month, in+一段时间, soon(很快), tonight, the day after tomorrow等。
注意：will后用动词原形，没有人称和数的变化；be going to do sth. 表示打算、准备做某事。
结构：主语+will be/V.原形… 主语+won’t +be/V.原形… Will +主语+ be/V.原形… 用法：1. They will go to Tibet by train next week. （改否定）
They ________ _________Tibet by train next week.
2. He often goes to the park on foot. ( tomorrow改写)
He ________ ________to the park on foot tomorrow.
_________ ________you going to _________?
4. His parents will buy a new house next week. (改一般疑问句)
__________his parents _________a new house next week?
5. There is an action movie.(用tonight改写)
There _________ _________an action movie.
__________ __________ __________they finish the task?
练习：1. He ______________(learn) English next week.
2. The young man _____________(teach) us how to use Internet tomorrow.
3. You must__________(finish) the task in five days.
4. The workers ____________(build) the bridge in a week.
5. There ___________(be) a football match in Hongkong next week.
6. There are so many clouds. It_____________(rain)
7. I_______________(learn) to use the Internet.
8. I think it___________(snow) this afternoon.
9. If I am free, I___________(go) with you.
10. Will you please__________(pass) me the book?
综合填空： --It wasn’t very good .
2. It’s time (have) class, let’s go to the classroom . 3
7. He usually ____________ (sleep) in the class.
8. They can ____________the guitar well. (play)
9. Mary enjoys ___________football games very much. (watch)
10. Thanks for _____________me so much help. (give)
11. Lin Tao wants __________an actor when he grows up. (be)
12. It’s boring ________________(take) a train for a long time.
13. Don’t_______________ (run) in the hallways.
14. Please ___________ (open) the windows.
15. Look! The children _________________ (have)a good time in the park. 句型转换: 对画线部分提问)
_________ _________ Lucy _________ English?
2. Don’t talk with others during the class. (改为同义句)
You _________ __________ with others during the class.
3. I’d like to visit Tibet with ________ ________you like to visit Tibet ________during your holidays? 4. Jack decorates Christmas trees with his parents every year.(用last year改写) Jack _________Christmas trees with his parents _________year.
5. The student often plays soccer on the playground.(用now 改写)
The student _________ _________ soccer on the playground now. 对画线部分提问)
_________ __________ _________ Mrs. Read go shopping?
7. I do my homework with my brother at home.(改为否定句)
I _________ _________ my homework with my brother at home.
8. How is the weather today?(用yesterday改写) _________ ________the weather ____________?
9. The girl went to the hospital with the old woman.(改为否定句)
The girl _________ __________to the hospital with the old woman. 对画线部分提问)
________ _________ _________ __________ you have every day?
11. I listen to the radio every Friday.(用at the moment改写)
I _________ __________ to the radio ________ _________ ________. __________ __________ Maria like living in China?
13. I did my homework at home yesterday.(改为否定句)
I _________ __________ my homework at home yesterday.
14.They had a good time at the party last night. (改为同义句)
They __________ ___________ at the party last night.
15.Den did his homework last Monday.(用play football 改为选择疑问)
_______ Den _________ his homework _________ _______ football last Monday?
16. Liu Mei read the book under the tree .(改为一般疑问句)
__________ Liu Mei ___________the book under the tree?