新版八年级下册过去进行时讲解及习题(有讲解附练习)
人教版八年级下册第五单元重点语法--过去进行时知识点总结讲解+练习 (无答案)
教学内容过去进行时教学目标1、掌握过去进行时用法，理解其结构，各种语气变形；2、熟练运用其标志词或词组造句，知其所以然；3、了解延续性动词与非延续性动词的概念，能很好地将其与when, while结合使用。
教学重难点能做对关于中考中现在完成时考察部分的题目；并运用其写作。
一、定义1.表示过去某个时刻正在进行的动作。
He was having breakfast at six o’clock yesterday morning.2.表示过去某个时间段正在进行的动作。
He was writing stories the whole morning.二、结构1.肯定结构：主语+was/were +doing+其它.I was watching TV at eight last night.He was having breakfast at seven this morning.2.否定结构：主语+was/were +not +doing+其它.I was not watching TV at eight last night.He was not having breakfast at seven this morning.3.一般疑问句：Was/Were+主语+doing+其它?(1)Were you watching TV at eight last night?Yes, I was. / No, I wasn’t.(2)Was he having breakfast at seven this morning?Yes, he was. / No, he wasn’t.4.特殊疑问句：疑问词+was/were+主语+doing+其它？三、时间标志词1.at+具体时刻+过去时间(at five last Saturday)2.at this time+过去时间(at this time yesterday)3.过去时间段(from nine to ten last evening)4.at that time/moment5.when &while引导的过去时间状语从句考点一现在分词要点归纳：动词ing 的基本变化规则1. __________________, 如do—doing2.___________________, 如have—having, come—coming3. __________________________________________________如: shop—shopping, skip—skipping, run--- running口诀：停止游泳，___________ _____________开始跑步和跳绳，___________ _____________ ___________到达商店购物，___________ _____________忘记坐下切蛋糕。
八年级语法过去进行时在线辅导讲解与练习
过去进行时在线辅导讲解与练习(含答案)过去进行时是表示过去某一时刻或某一时间正在进行或发生的动作。
可以从两个方面来理解：1 过去某一时刻正在进行或发生的动作。
E.g. They were playing football at ten o'clock yesterday morning. My mother was cooking when I got home. I was washing my clothes at this time yesterday. 2 过去某阶段持续进行的动作What were you doing during the holiday? 另外，在复合句中，若主要动作和背景动作是同时发生的，那么主从句都可用过去进行时e.g. Jenny was reading while Danny was writing.其结构是助动词be的过去形式was/were +v-ing.其句式变化仍然要在be上做文章。
E.g. We were working in class.We weren't working in class. Were you working in class?过去进行时常与过去某一特定时间的状语连用，如last night, at that time, at noon yesterday, last Sunday 等。
也有时没有时间状语，要通过上下文的暗示来确定用过去进行时。
E.g. The students all worked hard. Everyone knew what he was working for.做题时常见错误如下：一、易把be+现在分词记成be+过去分词例：He was talked (talk) to his mum at that time.答案：was talking解析：过去进行时与现在进行时结构上的区别体现在be动词上。
初二下过去进行时讲解及练习
答一读句子，找规律1. I was playing football at three last Sunday.2 .They were singing songs from seven to nine last night.3. I was waiting for you from eight to ten yesterday morning.4.What was he doing all day last Sunday?5.It was said that she was writing a novel last year.二：过去进行时结构：主语+ was / were + V-ing + 其它。
否定式：主语+ was / were not + V-ing + 其它三：与过去进行时经常连用的时间状语1.at 3:00 last monday ...，at 8:00 last night即：过去某一具体时刻2.from nine to ten yestreday即（过去某一具体时间段）3.when引导的从句4.while引导的从句四；when与while的区别I was watching TV when my mother came in.He was playing basketball while she was sleeping.过去进行时+when（这时，突然）+一般过去时过去进行时+while+过去进行时过去进行时练习题1. I _____ (have) my breakfast at half past six yesterday morning.2. Mary _____ (go) over her lessons from six to seven last night. John and peter ____ (do) the same thing.3. What _____ you ___ (do) at that time? W e _____ (watch) TV.4. Was your father at home yesterday evening? Yes ,he was. He _____ (listen) to the radio.5. They _____(not make) a model ship when I saw him.6. _____ they ____ (have) a meeting at 4 yesterday afternoon?No, they _____. They _____ (clean) the classroom.7. ______ it ______(rain) when you left school? Yes, it ____. (No, it ____)8. What _____ your father _____ (do) when he was your age?9. One day, Edison _____ (wait) for a train to arrive, and suddenly a little boy ran to the track(轨道) to play.10. When the bell rang, jenny _____ (wait) in her seat.选择题。
人教版八年级下册第五单元重点语法--过去进行时知识点总结讲解+练习(无答案)
教学内容过去进行时教学目标1、掌握过去进行时用法，理解其结构，各种语气变形；2、熟练运用其标志词或词组造句，知其所以然；3、了解延续性动词与非延续性动词的概念，能很好地将其与when, while结合使用。
教学重难点能做对关于中考中现在完成时考察部分的题目；并运用其写作。
一、定义1.表示过去某个时刻正在进行的动作。
He was having breakfast at six o’clock yesterday morning.2.表示过去某个时间段正在进行的动作。
He was writing stories the whole morning.二、结构1.肯定结构：主语+was/were +doing+其它.I was watching TV at eight last night.He was having breakfast at seven this morning.2.否定结构：主语+was/were +not +doing+其它.I was not watching TV at eight last night.He was not having breakfast at seven this morning.3.一般疑问句：Was/Were+主语+doing+其它?(1)Were you watching TV at eight last night?Yes, I was. / No, I wasn’t.(2)Was he having breakfast at seven this morning?Yes, he was. / No, he wasn’t.4.特殊疑问句：疑问词+was/were+主语+doing+其它？三、时间标志词1.at+具体时刻+过去时间(at five last Saturday)2.at this time+过去时间(at this time yesterday)3.过去时间段(from nine to ten last evening)4.at that time/moment5.when &while引导的过去时间状语从句考点一现在分词要点归纳：动词ing 的基本变化规则1. __________________, 如do—doing2.___________________, 如have—having, come—coming3. __________________________________________________如: shop—shopping, skip—skipping, run--- running口诀：停止游泳，___________ _____________开始跑步和跳绳，___________ _____________ ___________到达商店购物，___________ _____________忘记坐下切蛋糕。
八年级英语过去进行时讲解及练习
专题四：过去进行时（一）一、过去进行时的结构过去进行时句子中的谓语部分由“was/were ＋现在分词”构成。
过去进行时谓语部分的否定式由“was/were not ＋现在分词”构成。
过去进行时的一般疑问句由“Was/Were ＋主语＋现在分词？”构成。
典例精讲：I saw him in the library yesterday. He ________ a book at that moment. (天津)A ．readsB ．is readingC ．was readingD ．will read 二、时间状语常用来表示过去进行时的时间状语有at nine o'clock yesterday ，from nine to ten last evening ，at that time 等。
典例精讲：—I called you at 4：00 yesterday afternoon ，but no one answered. —Sorry ，I ________with my friends at that time.A ．swimB ．swamC ．will swimD ．was swimming 三、过去进行时表示的感情色彩与现在进行时相似，过去进行时也可表示满意、称赞、惊讶、厌恶等感情色彩，也通常与 always ，forever 等副词连用。
eg ：They were always quarrelling. 他们老是吵架。
四、需注意部分动词是不用于进行时的 (1)感官动词：hear ，see ，feel ，taste...(2)表示爱憎的动词：like ，love ，hate... (3)表希望、意愿的动词：want ，wish... (4)表占有的动词：own ，have... —Have you had your breakfast yet? —Yes. Mom ________it for me.A ．was cookingB ．is cookingC ．will cookD ．cooked 典例精讲：一、根据句意，用括号中所给词的正确形式完成句子1．The students ________________(not read) when the teacher came in. 2．—I called you ，but no one answered.—Oh ，sorry. I ____________(cook) in the kitchen.3．Many visitors _____________(visit) the museum in our school at 8 o'clock yesterday evening.4．We ______________(play) football, and suddenly it began to rain. 5．The head teacher as well as the students____________ (climb) up Mount Tai this time yesterday.6. Simon _______ (make) a model plane at 8:00 this morning.7. Peter _________ (do) his homework at seven last night.8. My father _________ (read) a novel at that time. 二、用所给单词的适当形式完成句子It was nine o'clock on Saturday morning. The family were all in the garden. Mr. King and Mrs. King 11.___________ (sit) under the tree, and they 12.___________ (talk) and 13._____________(laugh)．Their son Jack 14.___________ (read) an interesting book. Their daughter Wendy 15.__________ (play) with their dog. Everyone was very happy.（二）一、过去进行时可以表示过去某一个时刻或时段正在进行或持续的动作，句子通常和at...yesterday morning ，at that time ，st night 等时间状语连用。
过去进行时专题语法讲解及练习带答案八年级下册英语
过去进行时语法讲解及练习带答案一、过去时与过去进行时的类比?二、过去正在进行时的两种构成讲解：一个句子到从句转变的关键在于把过去时间的标志词用一个表示过去动作的句子来表示三、when 和while引导的过去时间状语从句的区别一、用所给词的正确形式填空1.While I (watch) TV last night, my brother (read)a book.2.At six o 'clock last week, I （play）basketball.3.When I （open）the door, he （cough）.4.While he （wait）for the bus last Monday, I （pass）by on my bike.5.____they___(have)a meeting at four yesterday afternoon?6.When I___(come)in the room,he didn’t___(see)me,for he___(read)something.7.At that time yesterday, I （lie）in bed.8.While Bob （play）in the park yesterday, his parents （clean）at home.9.When I was （walk）yesterday evening, I saw Tom （go）out with a bag10.Wendy （communicate）with her teacher after class yesterday11. When I （arrive）at the office last Wednesday, Sam （stand）in front of the office door.12.A strange box ___(arrive) while we __(talk).13. Father __ still ____(sleep) when I ___(get) up yesterday morning.14.When I opened the door at eight o 'clock in the afternoon yesterday , I saw my brother (push) my sister15.On a rainy day last month Lucy was （take）off on a plane to Paris二、选择用When/while填空1.We were reading the newspaper ____ the light went out.2.___ she was watching TV in the sitting room, the bell rang.3.She hurt herself ____ she was getting off the bus.4.____ he arrived, I was having a bath.5.___ I was playing games, my sister was doing her homework.6.Some people waste food, ____ others don’t have enough to eat.7.___ it began to rain, they were playing chess.( )1.When you me at eight o 'clock yesterday afternoon, I for my familyA.were calling ，cooked,B. called，cookingC. called, was cookingD. were calling，cooked( )2What did you yesterday afternoon while I dinner?A.did，was havingB.do，haveingC.were doing，was havingD.do，was having( )3.When I the flowers yesterday morning, it suddenly .A. watered, rainedB. was watering, was rainningC. watered, was rainningD. was watering, rained( )4.When we the exam last Friday, it suddenly rained heavilyA. were takingB. takeC.were takeingD. took( )5.What book ___ you ___ when I ___ you at four yesterday afternoon?A. did, read, was seeingB. did, read, sawC. were, reading, sawD. were, reading, was seeing( )6.When he in hospital last Tuesday, I in Beihai.A.was，traveledB. is，travelC. were，was travelingD. was，was traveling( )7.I the dishes when he on the doorA. washed, was knockingB. was washing, knockedC. washed, knockedD. was washing, was knocking( )8.A girl ____ my pen fall off the table when she ____ me.A. saw, passedB. was seeing, passedC. was seeing, passedD. was seeing, was passing( )9.We ____ for Tom at ten last Sunday. He often kept us ____.A. were waiting, waitingB. were waiting, waitC. waited, waitingD. waited, wait( )10.He to Paris between eight and nine last weekendA. was flyingB.flyC. fliedD. were flying( )11.What was Maria doing at 7 o’clock yesterday evening, Kangkang?She said that she _____ her room.A.cleaned B . is cleaning C. was cleaning .( )12.I called you yesterday evening, but no one answered.Sorry. I________a letter at that time.A. writeB. was writingC. is writing( )13.David, I called you this morning, but nobody answered the phone .I’m sorry. І______football with my friends then.A. playB. will playC. was playing( )14. Hi, Susan, I didn’t see you at the party.Oh, I ______for an English test.A. studiedB. am studyingC. was studying( )15.It was Friday evening.Mr and Mrs.Green_____ready to fly to England.A.are gettingB.getC.were gettingD.got( )16.They_____a football game from7to9last night.A.were watchingB.watchC.watchedD.are watching( )17.He____his father on the farm the whole afternoon last Saturday.A.helpsB.would helpC.was helpingD.is helping( )18.We____for Tom at ten last Sunday.He often kept us______.A.were waiting,waitingB.were waiting,waitC.waited,waitingD.waited,wait( )19.This time yesterday morning Jack_____his bike alone .He_____TV A.repaired,didn’t watch B.was repairing,watchedC.repaired,watchedD.was repairing,wasn’t watching( )20.I asleep yesterday afternoon while the doctor advice.A.fell，was givingB.fall，was givingC. was falling，givenD.fell，were giving参考答案括号内动词的正确形式填空。
八年级下册过去进行时讲解及练习
过去进行时态 读句子，找规律
1. I was playing football at three last Sunday. 2 .They were singing songs from seven to nine last night. 3. I was waiting for you from eight to ten yesterday morning. 4.What was he doing all day last Sunday? 5.It was said that she was writing a novel last year.
A. did, read, was seeing B. did, read, saw
C
C. were, reading, saw D. were, readingБайду номын сангаас was seeing
6.It was Friday evening. Mr and Mrs. Green _____ ready to fly to England. C
二、改错：每处划线中有错误，在题后改正
1. Linda was write carefully at nine last night. writing 2. Tomorrow they were swimming in a river. yesterday 3.At that time, she listening to the radio. was listening 4. Jim and I was playing when he came in. were 5. I was studiing English when he knocked at the door. studying 6. Were you cooking a meal? ------Yes, I were. was 7. I weren’t doing my homework while Jim was listening to the radio.
人教新目标八年级下册过去进行时讲与练及答案
人教版八年级英语下册过去进行时●语法讲解1.构成：was/were＋doing2.用法：过去进行时主要表示过去某一时间或某一段时间正在进行的动作。
如：His father fell and hurt himself while he was riding his bicycle. 他爸爸骑自行车时摔了下来，受伤了。
3．常用时间状语：this morning, the whole morning, all day, yesterday, from nine to ten, last morning, when, while 等。
4．when 与while 的区别(1) 引导时间状语从句时，while 连接的是时间段，而when 连接的多是时间点。
如：What was your father doing while your mother was cooking ？你妈妈做饭时，你爸爸在干什么呢？What was your mother doing when you came back?当你回来时，你妈妈在干什么呢？(2) w hile 可以连接两个并列的句子，而when 不可以。
如：I was trying my best to finish my homework while my sister was watching TV .我当时正在尽力完成作业，而我妹妹正在看电视。
(3) w hen 是特殊疑问词，可以对时间进行提问，而while 不能。
如：When were you born? 你什么时候出生的？过去进行时练习一、用动词的适当形式填空。
1. I (have) my breakfast at half past six yesterday morning.2. Mary (go) over her lessons from six to seven last night. John and Peter (do)the same thing.3. What you (do) at that time? We (watch) TV.4. Was your father at home yesterday evening? Yes,he was. He (listen) to the radio.5. They (not make) a model ship when I saw him.6. it (rain) when you left school? Yes, it . (No, it )7. What your father (do) when he was your age?8. One day, Edison (wait) for a train to arrive, and suddenly a little boy ran to the track(轨道) toplay.9. The three of them were in a hurry because their plane (leave) in five minutes.10. She (make) her dress the whole afternoon.11. While we (wait) for the bus, a girl (run) up to us.12. I (telephone) a friend when Bob (come) in.13. Jim (jump) on the bus as it (move) away.14. We (test) the new machine when the electricity (go) off.15. She (not want) to stay in bed while the others (all, work) in the fields.二、选择题1. I a meal when you me.A. cooked, were ringingB. was cooking, rangC. was cooking, were ringingD. cooked, rang2. He said he to draw a plane on the blackboard at that time.A. triesB. triedC. was tryingD. will try3. While she TV, she a sound outside the room.A. was watching, was hearingB. watched, was hearingC. watched, heardD. was watching, heard4. They a football game from 7 to 9 last night.A. were watchingB. watchC. watchedD. are watching5. What book you when I you at four yesterday afternoon?A. did, read, was seeingB. did, read, sawC. were, reading, sawD. were, reading, was seeing6. It was Friday evening. Mr and Mrs. Green ready to fly to England.A. are gettingB. getC. were gettingD. got7. Lei Feng always of others when he in the army.A. is, thinking, wasB. was, thinking, isC. did, think, isD. was, thinking, was8. A girl my pen fall off the table when she me.A. saw, passedB. was seeing, passedC. was seeing, pastD. was seeing, was passing9. We for Tom at ten last Sunday. He often kept us .A. were waiting, waitingB. were waiting, waitC. waited, waitingD. waited, wait10. He his father on the farm the whole afternoon last Saturday.A. helpsB. would helpC. was helpingD. is helping11. While mother some washing, I a kite for Kate.A. did, madeB. was doing, madeC. was doing, was makingD. did, was making12. “you angry then? The”y “too much noise. ”A. Are, were makingB. Were, were makingC. Are, madeD. Were, made13. He some cooking at that time, so he me.A. did, heardB. did, didn ’t hearC. was doing, heardD. was doing, didn ’t hear14. This time yesterday Jack his bike. He TVA. repaired, didn ’t watc B h. was repairing, watchedC. repaired, watchedD. was repairing, wasn watc’hin t g15. His parents wanted to know how he on with his new classmates.A. was gettingB. getsC. is gettingD. will get过去时中考真题Part 11. —What were you doing this time yesterday?—I on the grass and drawing a picture.A. sitB. satC. am sittingD. was sitting2. While I TV, the bell rang.A. watchB. watchedC. am watchingD. was watching3. —Why didn ’t you answer my telephone yesterday?—Sorry. I a bath.A. tookB. takeC. am takingD. was taking4. While the alien a souvenir, the girl called the police.A. was buyingB. boughtC. buysD. is buying5. —I called you at 6 o'clock yesterday evening, but nobody answered.— I'm sorry. I my friend download the movie Kung Fu PandaⅡwhen the telephone rang,A. would helpB. helpedC. was helping6. I along the road when I saw Peter. So we stopped and had a chat.A. walkedB. was walkingC. would walkD. had walked7. —What did the teacher say just now?— Sorry. I didn ’t catch it. I something else.A. thinkB. will thinkC. was thinkingD. had thought8. When I came back yesterday evening, my brother his homework.A is doing B. has done C. was doing9. M rs White dinner when her son came home.A. is cookingB. was cookingC. are cookingD. were cooking10. —D id you see Mr. Black just now?—Yes. He his car when I met him.A. parkedB. was parkingC. parksD. will park11. —Amy, I called you yesterday evening, but nobody answered the phone.— Oh, I a walk with my mother at that time.A. takeB. tookC. am takingD. was taking12. Y esterday evening, I along the street when I suddenly met my maths teacher.A. walkB. walkedC. was walkingD. am walking13.—Where were you at 7:00 last night?— I to my mom at home.A. writeB. was writingC. wrote14. —Why didn ’t you go to play football with us yesterday afternoon?—I my mother with the housework then.A. helpedB. was helpingC. had helpedD. have been helping15. He when the UFO arrived. He didn ’t wake until the UFO disappeared.A. sleptB. was sleepingC. was doing homeworkD. was singing16. I my homework at nine o'clock last Sunday morning.A. am doingB. was doingC. do17. I was very angry with John—he just when I spoke to him.A. isn ’t listeningB. hasn ’t listenedC. didn ’t listenD. wasn ’t listening18. —I called you at 4:00 yesterday afternoon, but no one answered.—Sorry, I with my friends at that time.A. swimB. swamC. will swimD. was swimming19. Mr. Li us a report on our environment when the earthquake happened in Japan.A. gaveB.is givingC. was giving20. —Mr. Lee to a student when I entered the classroom this morning.- He is very patient he is young.A. talking; butB. talks; thoughC. was talking, thoughD. talked, however21.—Were you at school when he came to see you?—Yes, I a math class.A. hadB. was havingC. am havingD. have22. I met a good friend of mine while I on the street.A. walksB. walkC. was walkingD. am walking23. I when the UFO landed.A. am watching TVB. was watching TVC. have watched TVD. watched TV24. The girl with two cats in the yard when the earthquake happened.A. was playingB. is playingC. are playingD. were playingPart 21. Paul and I tennis yesterday. He did much better than 1.A. playB. will playC. playedD. are playing2. A big party was held in NO.18 Middle School last night, the teacher with students singing and dancing happily at the party.A. isB. wasC. areD. were3. Mr. Black is going to marry a girl he in Japan last year.A. meetsB. metC. has metD. would meet4. He went into his room, the light and began to work.A. has turned onB. turned offC. turned onD. has turned off5．—W hat did Mr. Smith do before he came to China?—He in a car factory．A. worked B．works C．is working D．will work6. —Have you ever been to Hong Kong？—Yes, I ＿＿＿there last month.A. went toB. have beenC. went7. This morning I had hardly got to my school when it to rain.A. had begunB. was beginningC. beganD. begins8.—Y ou have found your lost umbrella, haven ’t you?—Yes. I it behind the door this afternoon.A. have foundB. will findC. found9. Tom, along with three other boys, seen playing football a moment ago.A. isB. wasC. areD. were10. Ten minutes ago, there an eraser, a pen and some books on the desk.A. wasB. wereC. is11. —How was your trip to Hang Zhou, Jim?—Great! We to Xixi National Wetland Park.A. goB. am goingC. will goD. went12. –Do you know who cleaned the blackboard, Tina?-- Yes. John .A. doB. doesC. did13. The last time I to the cinema was two years ago.A. goB. have goneC. have beenD. went14. —Have you ever been to Canada?— Yes, I there last year with my parents.A. have beenB. have goneC. wentD. go15. I called you, but nobody answered. Where you?A. isB. areC. wasD. were16. ---Have you ever been to Shanghai?---Yes. I there a few months ago.A have been B. went C. have gone17. What’s the best present you have ever ?A. receivedB. receivesC. receiving18.—Lin Kai, hand in your homework, please.—Oh, sorry. I it at home this morning.A. was leavingB. has leftC. will leaveD. left19. I'm now in New York with my friend Jenny. We by plane on Monday.A. arriveB. arrivedC. are arrivingD. will arrive20.—Guess What! The great movie is on in the cinem．a一Nothing n ew．I it with my parents on the first day.A. saw B．see C．will see D. have been21. If it had been fine yesterday, we could have watched that air show. But it all day.A. has rainedB. had rainedC. rainedD. rains22. –When your mother you that blue dress, Lucy?–Sorry, I really can ’t rem M e a m ybert.wo or three weeks ago.A. will; buyB. does; buyC. did; buy23. －I ’v e got a ticket for the basketball game tonight.－Cool！How you it?A. had, gotB. did, getC. were, gettingD. will, get24. Hello! I'm very glad to see you. When you here?A. did; arriveB. will; arriveC. have; arrivedD. are; arriving25. —I have to be off right now.—What a pity! I you could stay a little longer with us.A. thinkB. am thinkingC. thought26. Tom was so careless that he his right arm when he was riding to school.A. hurtsB. hurtC. has hurtD. had hurt27. —I something wrong just now. May 1 use your eraser?—Of course. Here you are.A. writeB. wroteC. am writing过去进行时练习一、用动词的适当形式填空。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
过去进行时
一．概念：过去进行时主要表示过去某个时刻或某一阶段正在进行的动作，常和表示过去的时间状语then，at that time/ moment，yesterday，at nine，last night 等连用或者与when, while, as引导的过去时间状语连用。
但在不少情况下，没有表示时间的状语，这时需要通过上下文来表示。
We were watching TV from seven to nine last night.
What was he researching all day last Sunday
二．过去进行时的主要用法是描述一件事发生的背景；一个长动作发生的时候，另一个短动作发生（长动作用过去进行时，短动作用一般过去时）。
也可以表示两个动作同时发生，此时均用过去进行时
When I saw him he was cleaning his room.
While he was waiting for the bus, he was reading a newspaper.
He was cleaning his car while I was cooking.
三．When/ While“当……的时候”的区别
①when 既指时间点，也可指段时间，while只指段时间，因此when引导的时间状语从句中的动词可以是短暂性动词，也可以是延续性动词，而while从句中的动词必须是延续性动词。
-
②when 说明从句的动作和主句的动作可以是同时，也可以是先后发生；while 则强调主从句动作同时发生。
They were singing while we were dancing.
③when和while 还可作并列连词。
when表示“在那时”；while表示“而，却”，表对照关系。
如：
a. The children were playing when they heard the sound of a motor bike.
b. He is strong while his brother is weak.
典型例题
1) Mary ___ a dress when she cut her finger.
A. made
B. is making
C. was making
D. makes
^
2) As she ___ the newspaper, Granny ___ asleep.
；was falling B. was reading；fell
C. was reading；was falling
D. read；fell
四、通常不能用于过去进行时的动词主要有：agree, be, believe, belong, care, forget, hate, have(拥有), hear, know, like, love, mean, mind, notice, own, remember,
seem, suppose, understand, want, wish等。
例如：
误：I was knowing the answer. 正：I knew the answer.
误：I wasn‘t understanding him. 正：I didn‘t understand him.
相关习题
I.用所给词的适当形式填空：
1. While we __________ (wait) for the bus, a girl __________ (run) up to us.
·
2. I __________ (telephone) a friend when Bob __________ (come) in.
3. Jim __________ (jump) on the bus as it __________ (move) away.
4. We __________ (test) the new machine when the electricity __________ (go) off.
5. She __________ (not want) to stay in bed while the others ________________ (all, work) in the fields.
II.单项选择.
1. I ______ a meal when you _____ me.
A. cooked, were ringing
B. was cooking, rang
C. was cooking, were ringing
D. cooked, rang
2. He said he _____ to draw a plane on the blackboard at that time.
A. tries
B. tried
C. was trying
D. will try
：
3. While she ______ TV, she ______ a sound outside the room.
A. was watching, was hearing
B. watched, was hearing
C. watched, heard
D. was watching, heard
4. They _____ a football game from 7 to 9 last night.
A. were watching
B. watch
C. watched
D. are watching
5. What book ____ you ______ when I ____ you at four yesterday afternoon？
A. did, read, was seeing
B. did, read, saw
C. were, reading, saw
D. were, reading, was seeing。