一般现在时和一般过去时精讲+练习题
一般现在时、一般过去时、一般将来时练习题

一般现在时、一般过去时、一般将来时练习题时态专项复(一般现在时、现在进行时、一般过去时)一、用动词的正确形式填空1.I ________ (do) XXX.2.We _______ (fly) XXX.3.My mother _____________ (clean) our room on Sundays.4.Tom ____________(play) XXX____________ (play).5.She ___________(like) swimming。
She _____________ (swim) last XXX _______________ (wash) the dishes after lunch。
But my grandma_____________ (wash) today.7.Look at the man。
He ____________ (read) a magazine.8.Look。
The plane ______________ (fly) over the building.9.Listen。
My aunt ______________ (sing) in the room.She isa singer。
She __________like) singing。
She _____________(have) a music show。
She is excited.10.Tom and Mike always ______________ (swim) XXX ___________ (swim)XXX。
They ________________ (swim).11.What ____ you usually ______ (do) in the evening。
I ______ (play) XXX _______ you _______ (do) now。
小学六年级上册英语时态精讲练习

小学六年级上册英语时态精讲练习一、引言在英语学习中,时态是表达动作发生时间的重要语法知识。
小学六年级上册英语时态精讲练习主要帮助学生掌握一般现在时、一般过去时和一般将来时三种基本时态的用法。
通过本讲义的学习与练习,学生将能够正确运用这三种时态描述动作或状态。
二、一般现在时一般现在时用来描述经常性、习惯性的动作或存在的状态。
2.1 构成一般现在时由动词原形或动词的三单形式构成。
2.2 句型结构主语 + 动词原形/动词三单 + 其它.2.3 练习1. I (eat)_____ breakfast every morning.2. She (go)_____ to school by bus.3. The cat (sleep)_____ on the sofa.三、一般过去时一般过去时用来描述过去发生的动作或存在的状态。
3.1 构成一般过去时由动词的过去式构成。
3.2 句型结构主语 + 动词过去式 + 其它.3.3 练习1. I (watch)_____ a movie yesterday.2. She (visit)_____ her grandparents last week.3. They (play)_____ soccer in the park.四、一般将来时一般将来时用来描述将来要发生的动作或存在的状态。
4.1 构成一般将来时有两种构成方式:will + 动词原形和 be going to + 动词原形。
4.2 句型结构1. 主语 + will + 动词原形 + 其它.2. 主语 + be going to + 动词原形 + 其它.4.3 练习1. I (buy)_____ a new bike next month.2. She (travel)_____ to Japan with her family.3. They (move)_____ to a new house in two years.五、总结通过本讲义的学习与练习,学生应掌握一般现在时、一般过去时和一般将来时三种基本时态的构成、句型结构和用法。
一般现在时和一般过去时讲解及练习

A、一般现在时定义一般现在时。
表示通常性、规律性、习惯性的状态或者动作(有时间规律发生的事件)的一种时间状态。
基本结构构成1. be动词属于系动词, 表示事物和人的状态。
在一般现在时态的句子中主要表现为三种形式:am ,is、are。
后面往往接形容词或名词做表语。
如:(1)I’m strong. (strong形容词做表语)(2)He is a boy.( a boy名词做表语)含有be动词的句子在进行否定、疑问句变化时,都要在be动词上变化。
(1)变为否定句:主语+be+ not+其他。
即,直接在be后not.①I’m not a Chinese girl.②You are not right.③He is not strict with me.(2)变为一般疑问句:Be+主语+其他?即把be动词提到主语的前面。
注意:当肯定句主语为第一人称I和We时,变一般疑问句要变为第二人称,be动词也要相应的变为are.同样肯定句中的my和our 也要变为your.①I am a worker. (变为一般疑问句)→Are you a worker?②We are good friends. (变为一般疑问句)→Are you good friends?③She is from Japan. (变为一般疑问句)→Is she from Japan?(3)变特殊疑问句:一般的要求为“对划线部分提问”,即用特殊疑问词代替划线的部分,后接省略划线部分的一般疑问句(一般不再出现划线部分)。
如:①I’m well.(对划线部分提问)→How are you?②She is from America. (对划线部分提问)→Where is she from?2、情态动词:can,may,must,need为情态动词地一般现在时,need有时还做实义动词用。
我们这里主要以can为例来说明情态动词的用法。
情态动词后面必须接动词的原形。
一般现在时与一般过去时练习题及答案

一般现在时与一般过去时练习题及答案一、选择题1. My brother _______ football every weekend.A. playB. playsC. playedD. playing2. She usually _______ up at 7 o'clock in the morning.A. getB. getsC. gotD. getting3. They _______ lunch at the cafeteria every day.A. haveB. hasC. hadD. having4. Last year, I _______ to Japan for vacation.A. goB. goesC. wentD. going5. Sarah _______ her homework after dinner.A. doB. doesC. didD. doing答案:1. B2. B3. A4. C5. B二、填空题1. They often _______ (watch) movies at the cinema on weekends.2. My father usually _______ (read) the newspaper in the evening.3. Last month, we _______ (travel) to Europe.4. She _______ (not like) coffee, she prefers tea.5. Yesterday, I _______ (meet) my old friend at the park.答案:1. watch2. reads3. traveled4. doesn't like5. met三、改错题1. He go to school by bus every day.改为:He goes to school by bus every day.2. We saw a movie yesterday evening.改为:We see a movie yesterday evening.3. They doesn't like swimming in the pool.改为:They don't like swimming in the pool.4. Last weekend, she went to shopping with her friends.改为:Last weekend, she went shopping with her friends.5. My sister usually cook dinner for the family.改为:My sister usually cooks dinner for the family.答案:1. go → goes2. s aw → see3. doesn't → don't4. to shopping → shopping5. cook → cooks四、句型转换1. He watches TV every evening. (改为否定句)He doesn't watch TV every evening.2. They played soccer yesterday. (改为一般疑问句)Did they play soccer yesterday?3. She goes to the gym twice a week. (对划线部分提问) How often does she go to the gym?4. I usually eat breakfast at 7 o'clock. (改为过去时态)I usually ate breakfast at 7 o'clock.5. The cat sleeps all day. (改为否定句)The cat doesn't sleep all day.答案:1. 否定句:He doesn't watch TV every evening.2. 一般疑问句:Did they play soccer yesterday?3. 对划线部分提问:How often does she go to the gym?4. 过去时态:I usually ate breakfast at 7 o'clock.5. 否定句:The cat doesn't sleep all day.总结:通过这些练习题,我们可以巩固和加深对一般现在时和一般过去时的理解和应用。
(完整版)一般现在时与一般过去时练习题(包含答案)

(完整版)一般现在时与一般过去时练习题(包含答案)一、用正确的动词形式填空1. We often______(play) in 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 an 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?二、改句子1. Do you often play football after school? (肯定回答)2. I have many books. (改为否定句)3. Gao S han’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 got 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.否定句:一般疑问句:10. Mike has two letters for him.一般疑问句:否定句:11. I usually play football on Friday afternoon.否定句:一般疑问句:一、单项选择:从下列各题后所给的四个选项中选择最佳答案填空。
(完整版)一般现在时一般过去时练习初中(带答案)

一般现在时&一般过去时强化练一般现在时专题训练用所给词的正确形式填空1. We often________(play) on 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 ________(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 Saturdays17. 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.单项选择:1. There _____ an English film at the cinema now.A. will haveB. is going to haveC. is going to beD. is2. The picture _______ nice.A. looksB. is lookedC. lookD. is looking3. She ______ down and soon falls asleep.A. liveB. lainC. laidD. sits4. They _____ the office in time very morning.A. reach toB. arrivedC. wentD. get to5. We shall go to Shanghai on business before you _____ back next week.A. will comeB. cameC. would comeD. come6. The plane ______ over there.A. isB. areC.amD. was7. I see her ____ the room this morning.A. to enterB. enteredC. enterD. enters8. The teacher ________us to come to school on time.A. askB. askingC. asksD. asked9. John always ______ others.A. helpB. helpingC. helpsD. to help10. He ______for eight hours every day.A. workingB. to workC. worksD. worked11. You’d better ______ at home and ______ your homework.A. to stay, doB. stay, doC. to stay, to doD. stay, to do12. He sits down and ______ a rest.A. havingB. haveC. to haveD. has13. Uncle Wang never ______ a cake.A. makeB. to makeC. makingD. Makes一般过去时练习适当形式填空:1. Her father _______ (read) a newspaper last night.2. We _________ to zoo yesterday. (go)3.______ you _______ (visit) your relatives last Spring Festival?4. I ____________ (sweep) the floor yesterday, but my mother ______.5. We all _________ (have) a good time last night.6. He _________ (jump) high on last Sports Day.7. She likes _________ newspapers, but she _________ a book yesterday. (read)8. Jim’s mother _________ (plant) trees just now.9. It ____ (be) the 2nd of November yesterday. Mr. White ___ (go) to his office by car.10. Gao Shan ________ (put) the book on his head a moment ago.11. She ____ (be) a pretty girl. Look, she _____ (do) Chinese dances.12. Why have you kept me __________ here for so long a time? (wait)13. She __________ to the Great Wall several times. (goes)14. In his letter, he said that he __________ us very much. (miss)15. They all _________ (go) to the mountains yesterday morning.16. She _________ (not visit) her aunt last weekend. She ________ (stay) at home and_________ (do) some cleaning.17. Great changes __________ in our country since 1978. (take place)18. I __________ my daughter since last month. (hear from)19. It __________ me two days to write the article. (花费)20. We __________ football when it began to rain. We had to stop and go home. (play)21. Comrade Li Dazhao __________ in prison in 1927. (put)22. He __________ to the library. He'll come back soon. (go)23. We could not help __________ after we heard the story. (laugh)24. Would you please __________ me an English-Chinese dictionary when you come? (bring)25. He told me that he __________ the Great Wall the year before. (visit)26. I’m sorry you've missed the last bus. It __________ ten minutes ago. (leave)27. John stopped __________ a rest (have) because he __________ for three hours. (work)28. The boys __________ basketball on the playground are my classmates. (play)29. They____ (be) on the farm a moment ago.30. Jenny____ (not go) to bed until 11:00 o'clock last night.31. When I was young, I _____ (play) games with my friends.32. I _____ (eat) the bread, I 'm full now.33. The students often_________ (draw) some pictures in the art room.二、单选题1. – How many times have you been to the Great Wall?– Only once. I ______ there last year.A. wentB. have goneC. have been2. —When _____Jessy to New York?—Yesterday.A.does; getB.did; getC.has; gotD.had; got3. —Did you wash your clothes?—No, I was going to wash my clothes but I ______ visitors.A. have hadB. haveC. hadD. will have4. —Have you read a book called Jane Eyre?—Who________it?A.writes B.has written C.was writing D.wrote5. He used to _____ to work by bus,but now he goes to work ______ foot.A. going;onB. going;byC. go;onD. go;by6. — Jack, where's my small round mirror?— Sorry, Betty. I_________it.A. breakB. brokeC. will breakD. am breaking7. —Helen, where is your homework?—Sorry, Miss Read. I ________ some of it last night. But I haven't finished doing it yet.A. doB. didC. have doneD. will do8. Simon________ his fingers when he was cooking the dinner. (2007年盐城)A. burntB. was burningC. has burntD. had burnt9. I’m sorry you have missed the bus. It_________ five minutes ago.What a pity!A. was leavingB. has leftC. leftD. leaves10. Mr. Johnson, we have found your watch.My watch!Thank you. Where____ it? (2006年绍兴)A. do you findB. have you foundC. did you findD. were you finding答案:一般现在时填空:1. play 2 gets 3 Do you 4 does do 5 studies 6 goes 7 watches 8 Does read9 do have 10 does do 11 has 12 are 13 don’t watch 14 doesn’t go 15 likes 16 do do 17 read 18 teaches 19 take 20 is 21 likes 22 has 23 looks 24 do 25 am 26 goes 27 does 28 watches 29 have 30 is 31 is sleeping 32 watch33 took 34 does do washes 35 Does rain 36 do do play 37 is 38 visit 39 dances 40 didn’t come 41 moves 42 bought 43 goes单选:1-----5 DADDD 6---10 ACCCC 11—13 BDD一般过去时填空:1.read2.went3.Did;visit4.swept;didn't5.had6.jumped7.read;read8.planted9.was;went 10.put 11.is;is doing 12.waiting 13.has been 14.missed 15.went 16.didn’t visit;stayed;did 17. have taken place 18.have heard from 19.took 20.played 21. was put 22.went ughed 24.bought 25.visited 26.left27.to have;have worked 28.played 29.were 30. didn't go 31.played 32.ate 33.draw单选:1-----5ABCDC 6---10BBCCC。
小升初英语一般现在时一般过去时现在进行时综合练习题40题(答案解析)

小升初英语一般现在时一般过去时现在进行时综合练习题40题(答案解析)1. She ______ books every day.A.readB.readsC.is readingD.reading答案解析:B。
A 选项read 是动词原形,一般现在时中,当主语是第三人称单数时,动词要用三单形式;B 选项reads 是read 的三单形式,主语she 是第三人称单数,所以正确;C 选项is reading 是现在进行时;D 选项reading 不能单独作谓语。
2. My brother often ______ football after school.A.playB.playsC.is playingD.playing答案解析:B。
A 选项play 是动词原形,一般现在时中,当主语是第三人称单数时,动词要用三单形式;B 选项plays 是play 的三单形式,主语my brother 是第三人称单数,所以正确;C 选项is playing 是现在进行时;D 选项playing 不能单独作谓语。
3. We ______ TV in the evening.A.watchB.watchesC.are watchingD.watching答案解析:A。
A 选项watch 是动词原形,主语we 是第一人称复数,一般现在时中,第一人称复数作主语,动词用原形;B 选项watches 是三单形式;C 选项are watching 是现在进行时;D 选项watching 不能单独作谓语。
4. My father ______ to work by car.A.goB.goesC.is goingD.going答案解析:B。
A 选项go 是动词原形,一般现在时中,当主语是第三人称单数时,动词要用三单形式;B 选项goes 是go 的三单形式,主语my father 是第三人称单数,所以正确;C 选项is going 是现在进行时;D 选项going 不能单独作谓语。
一般现在时和一般过去时练习题

一般现在时和一般过去时练习题一、用所给动词的正确时态填空。
1.He ______ TV every evening. (watch)2.We always _______ t o school on foot. (go)3.Tom, with his classmates, often ____ football after school. (play)4.Their classroom _______ four big windows. (have)5.Your shoes ______ u nder the bed. (be)6.She ____ for her friends at the bus stop now. (wait)7.Sorry, I ______ no enough money with me now. (have)8.The days _____ longer and longer now. (get)9. ____ here and ______ by me. (come, stand)10.Look, the bus ______ . (come)11.His uncle usually ________ to work by bus. (go)12.Sorry, I’m busy. I _____ to a friend of mine in Hangzhou. (write)13.Lin Tao and his classmates _____ on a farm next week. (work)14.We ____ to the Great Wall if it _______ fine tomorrow. (go, be)15.Look at the cloud. I think it _______ . (rain)16.Mary ______ thirteen next year. (be)17.Today is Monday. Tomorrow _____ Tuesday. (be)18.There ______ no hospitals here ten years ago. (be)19.He __ you to the station tomorrow morning. (see)20.It ___ very hard. We’d better stay at home. (rain)21.I always _____ up at six in the morning, but I _____ u p a little later yesterday. (get )22.She _____ swim very well when she was five years old. (can)23.They ______ in Beijing in 1960. (be)24.He always ______ t o work by bike when he was in Shanghai. (go)25.I ____ you up as soon as I _____ to Nanjing. (ring, get)26.They never _______ in the room. (smoke)27.I ____ to school yesterday because I _____ i ll. (not go, be)28.John _______ like his father. (look)29.Be quiet. The baby ____ .(sleep)30.Some young people ______ in the lake. (swim)二、按要求变换句型。
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一、一般现在时(一)概念:表示经常性或习惯性的动作,或存在的状态1、肯定句:主语+谓语+其他。
She reads English everyday .2、否定句:主语+don’t/doesn’t+谓语+其他。
He doesn’t get up at 6:30 in the morning .3、一般疑问句:Do/Does+主语+V原+其他?Do you like English ? Yes, I do. /No, I don’t .4、特殊疑问句:特殊疑问词+do/does+主语+V原+其他?What time do you get up every morning ?Where does your father work ?(四)具体用法1、表示经常性或习惯性的动作,或存在的状态,常与表示频率的时间状语如:often , sometimes , usually,always , seldom,never, every day /year/month...), once/twice a week (month , year , etc.) , on Sundays等连用。
I leave home for school at seven every morning .2、在以when,if, as soon as, as long as等连词引导的从句中,当主句的谓语动词是一般将来时,那么从句的谓语动词通常用一般现在时来表示将来要发生的动作。
(主将从现)I'll tell him the news when he comes back. 他回来时,我将告诉他这个消息。
If you come this afternoon,we’ll have a meeting.今天下午如果你来,我们就开个会。
3、描述事物的状态、性质、特征等,例如:The door is open. 门是开着的。
The apple is sweet.这个苹果是甜的。
He can speak five foreign languages .他能说五种外语。
Autumn is beautiful.秋天是美丽的。
Changjiang River is one of the longest rivers in the world. 长江是世界上最长的河流之一。
My sister is always ready to help others . 我妹妹总是乐于助人。
(五)动词第三人称单数形式变化规则1、一般情况下,动词后直接加-s;如:help-helps ,clean-cleans ,give-gives等。
2、以s,x,ch,sh或o结尾的动词,在词尾加-es;如:dress-dresses,fix-fixes,watch-watches,finish-finishes等。
3、以辅音字母加y结尾的动词,把y变为i,再加-es;如:study--studies,fly-flies,carry--carries等。
注意:元音字母加y结尾的动词直接加s. 如:play--plays, stay--stays.4、动词have(有)遇在主语是第三人称单数时,have改为has,如:He has an interesting book.5、动词be遇有主语是第一人称单数时用am,遇有主语是第二人称时用are,遇有主语是第三人称单数时用is。
Be动词用法口诀:Be动词真伟大,生出am, is, are, 我用am, 你用are,is 跟着他,她,它,单数名词用is, 复数名词都用are。
动词时态练习题(一)一般现在时一、用动词的适当形式填空。
1. Miss Guo ______ (teach) us Chinese this term. She ______ (be) a very good teacher. She often ______ (talk) with us after class. Many of us ______ (like) talking with her.2. Where ______ their father______ (work)? He ______ (work) on a farm.3. What time ______ the shop ______ (close)? It _____ (close) at nine o'clock in the evening.4. He ______ (go) to school by bus every day.5. Tom usually______ (walk) to school on Monday.6. She often ______ (read) English in the evening.7. She ____ (go) to school at eight o’clock.8. He usually _____ up at 17:00. (get)9. She ____ (live) in Beijing.10. I _____(read) books in the library every day.二、句型转换:1. I like the red sofa. (变否定句)2. She has a nice cap. (变一般疑问句,并做肯定及否定回答)3. I am a bus driver. (变一般疑问句并做肯定回答)4. They play football in the garden every day. (变成否定句)5.There is an egg in the basket.(变成复数形式的句子)二.一般过去时(一)概念:表示过去某一时刻或某一段时间里所发生的动作或存在的状态。
(二)结构:一般过去时用动词的过去式表示。
(三)用法1、表示过去某一时刻或某一段时间里所发生的动作或存在的状态,常与过去明确的时间状语连用,如:yesterday,last week(month , year…),…ago,the other day ,just now ,at the age of…,in 1980等连用。
如:At the age of ten ,she began to learn to play the piano .2、表示过去经常发生或反复发生的动作,常与表示频度的时间状语连用。
When I was a child ,I often played football in the street .(四)句形转换1、肯定句:主语+动词过去式+其他。
I was in Beijing yesterday .I went to the beach yesterday .2、否定句:主语+wasn’t 或weren’t+其他。
主语+didn’t + V原+其他。
I wasn’t in Beijing yesterday .I didn’t go to the beach yesterday .3、一般疑问句:was/ were+主语+V原+其他?Did +主语+V原+其他?Were you in Beijing yesterday ?Did you go to the beach yesterday ?4、特殊疑问句:特殊疑问词+ was/ were+主语+其他?特殊疑问词+did+主语+V原+其他?Where were you yesterday ?Where did you go yesterday ?(五)动词过去式的规则变化1) 一般情况下, 在动词原形末尾加-ed ; 如look-looked2) 结尾是字母e 的动词加-d, 如practice-practiced;3) 结尾是“辅音字母+y” 的动词, 变“y”为“i” 再加ed, 如study-- studied;4) 重读闭音节结尾,(辅元辅结构) 双写动词尾的辅音字母,再加ed, 如stop--stopped。
不规则动词表原形过去式原形过去式catch caught come camedo did draw drewdrink drank drive droveeat ate fall fellam / is was are werebegin began break brokebring brought build builtbuy bought can could动词过去式的记忆口诀动词一般过去时, 表示过去发生事;be用was或用were, have, has变had;谓语动词过去式, 过去时间是标志;一般动词加- ed, 若是特殊需死记。
否定句很简单, 主语之后didn’t添;疑问句也不难, did放在主语前;如果谓语之前有did, 谓语动词需还原;动词若是was, were, 否定就把not添。
一般过去时练习题一、将下列动词变成过去式。
look_______ watch_______ like______ hope______ decide______ plan______ stop_______ carry______ study______ play______ stay______ let______ put_______ read_______ catch _____ teach_____ buy______ bring______ think ______ sit_____ write______ drive_______ ring______ buy______ run______ give_______ win _______ know ______ grow______ throw_____ draw _____ show_____ feel______ sleep_______ keep_____ sell____ meet_______二、用括号内所给动词的适当形式填空。
1. I_______________ (buy) a new dictionary the day before yesterday.2. —What day_____________ (be) it yesterday? —It______________ (be) Friday.3. He______________ (be) here half an hour ago.4. We often____________ (play) games last term.5. She_____________ (give) me a book a moment ago.6.The girl___________ (get) up very early this morning.7. They____________ (take) photos near the river an hour ago.7.He ____________(not watch) TV yesterday evening.9. —Why___________ (be) the boy late for school? —Because he _________(be) ill.10. Mr. Green _________ (come) to visit me last night.三、按要求改写下列各句。