非延续性动词的转化

新目标英语八年下考点,重点,知识点,作文整理Unit 10 I’ve had this bike for three years.本单元考点,重点一个：现在完成时态一.非延续性动词转化为延续性动词：英语中的动词根据词汇意义可分为动作动词和状态动词,其中动作动词又可细分为终止性动词(或称为瞬间动词、非延续性动词、界限性动词)和持续性动词(或称为延续性动词),表示动作一发生即告结束的动词叫终止性动词(非延续性动词)。

表示持续一段时间的动词叫持续性动词。

现在完成时中,非延续性动词不能与for和since引导的表示一段时间的状语连用,通常是用相应的延续性动词来代替。

他们的对应关系如下：leave – be away from离开, finish/end/stop – be over结束/完成,join the army – be in the army/ be a soldier 入伍,join the Party – be in the Party/be a Party member入党,go to school – be in school 上学, fall asleep/ get to sleep – be asleep睡着,catch/get a cold – have a cold 感冒, go abroad – be abroad去国外,begin/start – be on开始, become – be成为,buy – have买, marry – be married to结婚,wake up – be awake醒, lose – be lost 丢失,make friends with – be friends with交朋友, borrow – keep借,open/close/die – be open/ be closed/ be dead 打开/关闭/死,put on – wear穿, get up – be up起床,get to know – know认识,知道, come/arrive/reach – be here/be in/be in 来/到达,go – be there去, catch a cold – have a cold感冒.例如：(1)我买一本英语书已经三周了。

延续性动词与非延续性动词及其转换动词按其动作发生的方式、发生过程的长短可分为延续性动词与非延续性动词。

一. 延续性动词表示能够延续的动作,如：learn, work, stand, lie, know, walk, keep, have, wait, watch, sing, read, sleep, live, stay等。

延续性动词可以与表示时间段的状语连用。

表示时间段的短语有: ⑴ for+一段时间, 如：for 2 years; ⑵since从句, 如 since he came here; since+过去时间点名词, 如since last year, since 5 days ago. 例:He has lived here for 6 years. You can keep the book for 5 days.二. 非延续性动词也称终止性动词、瞬间动词, 表示不能延续的动作,这种动作发生后立即结束。

如: open, die, close, begin, finish, come, go, move, borrow, lend, buy等。

非延续性动词在肯定句中与表示时间点的状语连用，如：two years ago; at 5 o'clock;例: He died 5 years ago.三.延续性动词与非延续性动词之间的转换：例： He left five minutes ago. = He has been away for fiveminutes.这句话的意思是指他离开的动作是5分钟之前发生的，是过去时。

也就是说从他离开到现在已经有五分钟了，这个动作是延续的，要用现在完成时，并且要把原来的短暂性动词改为延续性动词。

下面是一些短暂性动词及相应的延续性动词，须牢记。

leave --- be away, borrow --- keep, buy --- have, begin/start --- be on, die --- be dead, finish --- be over,join --- be in+组织机构, be a member of+组织机构,open sth --- keep sth open, fall ill --- be ill, get up---be up,catch a cold --- have a cold, come here --- be here,go there --- be there, become --- be, come back --- be back,fall asleep --- be asleep, get to/ arrive/reach --- be (in), leave --- be away from, get to know --- know,go (get) out →be out， put on→ wear； catch a cold →have a cold等。

持续性动词与非持续性动词及其变换动词按其动作发生的方式、发生过程的长短可分为持续性动词与非持续性动词。

一.持续性动词表示能够持续的动作 ,如： learn, work, stand, lie, know, walk, keep, have, wait, watch, sing, read, sleep, live, stay等。

持续性动词能够与表示时间段的状语连用。

表示时间段的短语有 :for+一段时间 ,如：for 2 years，for a long time; since 从句 , 如： since he came here; since+时间点名词 , 如： since last year, since 5 days ago; how long等。

请看例句has lived here for 6 years.请看例句can keep the book for 5 days.请看例句stayed there for 2 weeks last year.请看例句long did you stay there last year请看例句brother has joined the army for two years ．（误）My brother has been a soldier for two years .（正）我哥哥自 1999 年就从军了。

请看例句brother has joined the army since 1999．（误）My brother has been a soldier since 1999(正)你哥哥从军多久了请看例句long has your brother joined the army （误）How long has your brother been a soldier（正）二.非持续性动词也称停止性动词、瞬时动词或点动词 ,表示不可以持续的动作 ,这类动作发生后立刻结束。

延续性动词与非延续性动词试比较，判断下列句子的正误。

翻译：我离开这所学校已八年啦。

【误】I have left this school for eight years.【正】I have been away from this school for eight years.解析：当现在完成时与表示一段时间的时间状语连用时，谓语动词必须使用延续性动词。

如果谓语动词是非延续性动词则需要转化为对应的延续性动词。

延续性动词表示能够延续的动作，也可以表示经验与经历，如：learn; sleep; keep; live等可以与for 和since 引导的时间状语连用He has lived here for 6years.非延续性动词也叫短暂性动词，表示不能延续的动作，这种动作发生后立即结束，如：open;begin; finish; come; go;borrow等不能与for 和since 引导的时间状语连用She has already finishedher work.1. 转化为相应的延续性动词borrow → keep buy → have put on → wear2. 转化为be+形容词/副词/介词/名词begin/start → be on go out → be out die → be deadopen → be open get to/ arrive in/reach → bein+地点come/ go → be + 相应的介词短语finish → be over fall ill → be ill get up → be upfall asleep → beasleepjoin → be in+活动/组织go to school → be in school become → be make friends → be friends close → be closedgo to bed → be in bed leave → be away(from)。

延续性动词与非延续性动词动词按其动作发生的方式、发生过程的长短可分为延续性动词与非延续性动词。

一.延续性动词表示能够延续的动作,如：study, learn, work, stand, lie, know, walk, keep, have, wait, watch, sing, read, sleep, live, stay等。

延续性动词可以与表示时间段的状语连用。

延续性动词的用法很广，常见于现在完成时中的句子中，且常与for，how，long，since等引导的表示一段时间的状语或状语从句连用。

表示时间段的短语有:+一段时间, eg: for 2 years; for a long time等从句,since he came here;+时间点名词+ago, eg：since last year, since 5 days ago;4. how long;二.非延续性动词也称终止性动词、瞬间动词或点动词,表示不能延续的动作,这种动作发生后立即结束。

如:open, die, close, begin, finish, come, go, move, borrow, lend, buy, move, happen, marry, arrive/reach, post, fall, break,有for+一段时间的完成时态中。

常见的这类动词有： go, come, leave, arrive, lose, land, catch, join, kill, find 等。

例如：1. He has joined the club for a long time. ( 错 )2. He has been a member of the club for a long time. ( 对 )3. His grandfather has died for over 30 years. ( 错 )4. His grandfather has been dead for over 30 years. ( 对 )【注意】之所以将这些动词称为瞬间动词，是因为这些动词在眨眼之间发生并终结。

延续性动词与非延续性动词之间的转换：leave --- be away, borrow --- keep, buy --- have, begin/start --- be on, die --- be dead, finish --- be over, join --- be in+组织机构, be a member of+组织机构, get up---be up, come here --- be here, go there --- be there, become --- be, come back --- be back, get to/ arrive/reach --- be (in), leave --- be away from,补充练习：1. When he arrived at the bus stop, the bus ________ for 20 minutes.A. has leftB. had leftC. has been awayD. had been away2. I ______ the League for 5 years so far.A. joinedB. have joinedC. have been in3. The factory ________ since the February of 1988.A . has been open B. has opened C. was open D. opened4. Mary and Rose _______friends since they met in 2000.A. have madeB. have beenC. madeD. have becomemustn't ________ until he comes back.A. be awayB. leaveC. be leftmeeting _______ for a week now.A. has finishedB. has endedC. has been overGao ______ this school for nearly 5 years.A. has been inB. has come toC. has taught______ a teacher for 4 years .A. has beenB. has becomeC. wasD. became9. I ______ home for a week.A. have returnedB. have been backC. returned10. How long _______ he ________A. diedB. has, diedC. has, been dead________ the car for a week.A. boughtB. has boughtC. has had2000, he _____ his hometown.A. has leftB. has moved awayC. has been away from'll lend you the book , but you can only _____ it for 2 days.A. borrowB. keepC. take________ for 2 hours.A. got upB. has got upC. has been upHow long can I ______ the book ------ Two weeks.A. borrowB. lendC. getD. keep情态动词专项复习( ) 1. Mr Wang ______ be in Nanjing now, he went to Beijing only this morning.A. mustn’tB. may notC. can’tD. needn’t( ) 2. –Must I saty at home, Mum --No, you ______.A. needn’tB. mustn’tC. don’tD. may not( ) 3. –Can you go swimming with us this afternoon--Sorry, I can’t. I _____ take care of my little sister at home because my mother is ill.A. canB. mayC. wouldD. have to( ) 4. –May I go to the cinema, Mum --Certainly. But you ______ be back by 11 o’clock.A. canB. mayC. mustD. need( ) 5. To make our city more beautiful, rubbish ______ into the river.A. needn’t be thrownB. mustn’t be thrownC. can’t throwD. may n ot throw( ) 6. –May I go out to play basketball, Dad--No, you ______. You must finish your homework first.A. mustn’tB. may notC. couldn’tD. needn’t( ) 7. –Where is Jack, please --He _____ be in the reading room.A. canB. needC. wouldD. must( ) 8. –Who is the man over there Is it Mr Li--No, it ______ be him. Mr Li is much taller.A. musn’tB. may notC. can’tD. needn’t( ) 9. These books ______ out of the reading room. You have to read them here.A. can’t takeB. must be takenC. can takeD. mustn’t be taken( ) 10. –Mum, may I watch TV now--Sure, but you ______ help me with my housework first.A. canB. mayC. mustD. could( ) 11. The boy said he had to speak English in class, but he ______ speak it after calss.A. couldB. didn’t have toC. mightD. shouldn’t( ) 12. –Must we hand in the papers now --No, you ______.A. can’tB. may notC. mustn’tD. needn’t( ) 13. John ______ go there with us tonight, but he isn’t very sure about it.A. mustB. canC. willD. may( ) 14. Even the top students in our class can’t work out this problem. So it ______ be very difficult.A. canB. mayC. mustD. need( ) 15. Put on more clothes. You ______ be feeling cold with only a shirt on.A. canB. couldC. wouldD. must( ) 16. It’s still early. You ______.A. mustn’t hurryB. wouldn’t hurryC. may not hurryD. don’t have to hurry ( ) 17. –May I stop here --No, you ______.A. mustn’tB. might notC. needn’tD. won’t( ) 18. A computer ______ think for itself, it must be told what to do.A. can’tB. couldn’tC. may notD. might not( ) 19. –Could I borrow your dictionary -- Yes, of course you _______.A. mightB. willC. canD. should( ) 20. Peter ______ come with us tonight, but he isn’t very sure yet.A. mustB. mayC. canD. will( ) 21. Michael ______ be a policeman, for he’s much too short.A. needn’tB. can’tC. shouldD. may( ) 22. ______ I know your nameA. MayB. WillC. ShallD. Must( ) 23. You ______ be more careful next time.A. have toB. mayC. mustD. might( ) 24. You ______ miss the lesson, though we ______ have it on Thursday.A. mustn’t; needn’tB. needn’t; mustn’tC. mustn’t; mustn’tD. needn’t;needn’t( ) 25. This pen looks like mine, yet it isn’t. whose ______ it beA. mustB. mayC. wouldD. can( ) 26. What kinds of homes will we live in the future Nobody ______ be sure, but scientists are working out new ideas now.A. willB. mayC. canD. must( ) 27. I ______ like to know where you were born.A. shallB. shouldC. doD. may( ) 28. ______ you be happy!A. MightB. MustC. WishD. May( ) 29. A teacher ______ do every exercise, but a student must.A. may notB. needn’tC. can’tD. mustn’t( ) 30. The matter ______ be changed into a gas, but it _______ be heated to its boiling point.A. may; needn’tB. may; canC. mustn’t; needn’tD. can; must( ) 31. Teachers and students ______ look coldly at you for a day or two, but there are friendly feelings in their hearts.A. mustB. canC. mayD. should( ) 32. Cars and buses ______ stop when the traffic lights turn red.A. canB. needC. mayD. must( ) 33. –Do you think his story ______ true --I don’ think so. But it sounds good.A. must beB. may beC. can beD. has to be( ) 34. Look out! The knife is very sharp. You ______ cut your finger.A. needB. mustC. shouldD. may( ) 35. –How long ______ the book be kept--For two weeks, but you ______ return it on time.A. can; mayB. may; needC. can; mustD. must; need( ) 36. – May I have an apple, Mum--Certainly. But you ______ wash your hands firstA. mayB. mustC. canD. need( ) 37. –There is a lot of smoke coming out of the teaching building there.--Really It ______ be a fire, most probably.A. canB. ought toC. mayD. must( ) 38. –Shall I tell John about the bad news--No, you ______. I think that will make him sad.A. needn’tB. wouldn’tC. shouldn’tD. mustn’t( ) 39. –Could I call you by your first name --Yes, you ______.A. willB. couldC. mayD. might( ) 40. –Let’s go to the ci nema, shall we -- _______.A. No, I can’tB. Yes, I willC. Yes, thank youD. No, we’d better not( ) 41. --______ the man there be our new teacher--He ______ be, but I’m not sure.A. May; mustn’tB. Can; mayC. Must; can’tD.Can; can’t( ) 42. –Sometime is knocking at the door. Who ______ it be--It ______ be Tom. He is still in the school.A. can; can’tB. can; mustn’tC. might; couldD. might; may专题复习( ) 1. -- How long may I ______ your book--For a we ek. But you musn’t ______ it to others.A. borrow; lendB. keep; lendC. lend; borrowD. keep; borrow( ) 2. It won’t ______ them much time to fly to Beijing from Shanghai.A. spendB. useC. takeD. pay( ) 3. Mr Wang ______ be in Nanjing now, he went to Beijing only this morning.A. mustn’t beB. may notC. can’tD. needn’t( ) 4. –Do you like the music the Moonlight Sonata --Yes, it ______ really beautiful.A. feelsB. soundsC. listensD. hears( ) 5. Lily finished _______ the book yesterday.A. readB. readingC. to readD. reads( ) 6. Mrs Brown isn’t here. She has to ______ her baby at home.A. look atB. look forC. look likeD. look after( ) 7. I have to go now. please remember to _______ the lights when you leave.A. turn offB. turn downC. turn upD. turn on( ) 8. Susan’s parents have bought a large house with a swimming pool. It _______ be very expensive.A. mustB. canC. mustn’tD. can’t( ) 9. –It’s too hot. Would you mind _______ the door -- _______. Please do it now.A. to open; OKB. opening; Certainly notC. opening; Of courseD. to open; Good idea( ) 10. I want to _______ this book for a month.A. borrowB. keepC. lendD. get( ) 11. –How many times _______ you _______ to Beijing this year --Three times.A. have; beenB. had; beenC. have; goneD. had; gone( ) 12. What a nice bag! But she _______ only thirty dollars for it.A. costB. tookC. spendD. paid( ) 13. Cotton _______ nice and soft.A. is feltB. is feelingC. feelD. feels( ) 14. I think this is the best way to solve the problem. Do you _______ meA. play withB. hear ofC. agree withD. get on well with( ) 15. –Guess who is coming to supper. – I don’t know. _______ me.A. SpeakB. SayC. TellD. Tell( ) 16. Please _______ your phones here with you tomorrow.A. takeB. bringC. carryD. lift( ) 17. Don’t _______ your lessons. We’ll help you.A. worryB. worried aboutC. be worried aboutD. be afraid( ) 18. The window is broken. Try to _______ who broke it.A. find outB. findC. lookD. look for( ) 19. He could _______ neither French nor German. So I ______ with him in English.A. speak; talkedB. talk; toldC. say; spokeD. tell; talked( ) 20. The ticket is on the floor. Would you please _______ for meA. pick it upB. pick up itC. pick up themD. pick them up( ) 21. If you don’t know a word, you must _______ the word in a dictionary.A. look upB. look downC. look overD. look out( ) 22. It’s time for class. We’d better _______.A. stop to talkB. to stop to talkC. stop talkingD. to stop talking( ) 23. There was a strange sound outside. Mary went out and _______ around, but she _______ nothing.A. looked; sawB. saw; sawC. watched; lookedD. looked; find( ) 24. The woman _______ the child quickly and took him to hospital.A. put onB. dressedC. had onD. was wearing( ) 25. –Oh, you painted the walls yourself--Yes. It was not hard. The whole work didn’t _______ much.A. wantB. costC. spendD. pay( ) 26. --_______ all your things, Tom! I hate them here and there. –OK, Mum.A. Put upB. Put onC. Put downD. Put away( ) 27. Yuki loves wearing strange hats because she wants people to _______ her.A. believeB. controlC. noticeD. visit( ) 28. _______! It’s the music of Mozart. Be quiet.A. HearB. SoundC. SingD. Listen( ) 29. –The room is so dirty. _______ we clean it -- Of course.A. WillB. WouldC. DoD. Shall( ) 30. We must do something to stop people from _______.A. to throw litter aboutB. to throw litter intoC. throwing litter aboutD. throwing litter into时态和语态专项复习( ) 1. Don’t make so much noise. We _______ to the music.A. listenedB. listenC. are listeningD. have listened( ) 2. I must return the camera to Li Lei. I _______ it for two weeks.A. keepB. borrowedC. have keptD. have lent( ) 3. –When will you tell him the good news --I will tell him about it as soon as he _______ back.A. comesB. cameC. will comeD. is coming( ) 4. –Dad, please open the door, it _______. –OK, dear. I’m coming.A. locksB. lockedC. is lockedD. was locked( ) 5. –Did you go to Jim’s birthday party --No, I _______.A. am not invitedB. wasn’t invitedC. haven’t invitedD. didn’t invite( ) 6. A talk on Chinese history _______ in the school hall next week.A. be givenB. has been givenC. will be givenD. will give( ) 7. You may go fishing if your work _______.A. is doneB. will be doneC. has doneD. have done( ) 8. –What do you think of the football match yesterday--Well. It’s surprising. The strongest team of our school _______.A. was beatenB. wonC. scoredD. was failed( ) 9. –Would your younger brother go for a picnic this Sunday --If I don’t go, _______.A. so does heB. so he willC. neither will heD. neither does he( ) 10. The trees must _______ three times a week.A. waterB. is wateringC. be wateredD. waters( ) 11. –Did you see Tom at the party -- No, he _______ by the time I got there.A. leftB. was leavingC. had leftD. has left( ) 12. –Why not go to see the dolphin show with me --Because I ______ it.A. sawB. will seeC. seeD. have seen( ) 13. –Do you like watching cooking programs on TV --No, I don’t, but my twin brother ____.A. doesB. doC. isD. are( ) 14. Catherin _______ the letter before her mother came into her bedroom.A. has writtenB. was writtenC. had writtenD. is writing( ) 15. The old man is quite weak after the accident, so he _______.A. must take care ofB. must be take care ofC. must look afterD. must be looked after( ) 16. The ticket is on the floor. Would you please _______ for meA. pick it upB. pick up itC. pick up themD. pick them up( ) 17. He _______ living in the country to the city.A. likesB. prefersC. enjoysD. loves( ) 18. How long have you _______ the bookA. boughtB. lentC. hadD. borrowed( ) 19. –Do you know him well --Sure. We _______ friend since ten years ago.A. wereB. have beenC. have becomeD. have made( ) 20. _______ me carefully, boys and girls. Can you _______ meA. Listen to; hearB. Hear; listen toC. Hear; hearD. Listen to; hear from( ) 21. –These farmers have been to the United States. –Really When ______ thereA. will they goB. did they goC. do they goD. have they gone( ) 22. I’m sorry I haven’t got any money. I _______ my handbag at home.A. have missedB. have leftC. have putD. have forgotten( ) 23. –Where is Miss Gao. Lily --She _______ to the teacher s’.A. has beenB. has goneC. wentD. would go( ) 24. When her father came back home, Joan _______ with her friend.A. talkedB. talksC. is talkingD. was talking( ) 25. –What’s that thing with three legs--It’s a cup. It ______ for drinking in the old days.A. usesB. usedC. is usedD. was used( ) 26. His uncle _______ in three days.A. returnsB. has returnedC. returnedD. will return( ) 27. –Hi, Lin Tao. I didn’t see you at the party. --Oh, I _______ ready for the maths exam.A. am gettingB. was gettingC. gotD. have got( ) 28. –Excuse me. What did you say you would like to do, Miss White--I said I’d better go back to the office. I _______ something this afternoon.A. would meetB. meetC. am going to meetD. was meeting( ) 29. What _______ the forest in our country in the last ten years.A. has happened doB. is happened toC. has happened atD. is happening( ) 30. –What did Mr Jones do before he moved here--He _______ a city bus for over twenty-five years.A. is drivingB. droveC. has drivenD. drives( ) 31. –When _______ you _______ your homework--I had finished it before he _______ back.A. have; finished; cameB. have; finished; was comingC. did; finish; cameD. did; finish; was coming( ) 32. Look! The boys _______ happily in the river.A. swimB. swamC. will swimD. are swimming( ) 33. Every spring, many trees _______ along the river.A. were plantedB. is plantedC. will be plantedD. are planted( ) 34. The letter _______ in French. I can’t read it.A. is writingB. is writtenC. wroteD. writes( ) 35. If Mary _______ next Sunday, we will go boating together.A. will comeB. comesC. shall comeD. should come( ) 36. We expected that the English teacher _______ some advice on how to write an English letter.A. will giveB. gaveC. is going to giveD. would give( ) 37. Five years ago nobody knew him, although he _______ more than 100 songs.A. already wroteB. have already writtenC. had already writtenD. was already writing( ) 38. So far I _______ any success. However, I’ll keep trying.A. don’t haveB. didn’t haveC. haven’t hadD. won’t have( ) 39. It was the third time that I _______ in at his office.A. have droppedB. had droppedC. droppedD. was dropping( ) 40. I often see Tom _______ homework while I am watching TV every evening.A. doB. doingC. didD. to do( ) 41. The flowers want _______. Look, the soil is so dry.A. wateringB. being wateredC. to waterD. waters( ) 42. –Be careful! You might fall into the water.--Thank you. I ______ I _______ so close to the pool.A. didn’t know; am standingB. don’t know; am standingC. didn’t know; was standingD. didn’t know; would stand( ) 43. –Excuse me. Where is the sick boy sent here a moment ago--He ______ by the doctor.A. has been examinedB. will be examinedC. is examinedD. is being examined( ) 44.—Have you got the airplane tickets--No. when I _______ to the office, all the tickets to Beijing ______ out.A. get; have been soldB. got; had been soldC. got; had soldD. got; were being sold( ) 45. –Your name again I _______ quite catch it. –Bartholomew Liveli.A. didn’tB. don’tC. couldn’tD. can’t( ) 46. – Whom are you waiting for--Gary’s parents. But neither of them _______ yet.A. arrivedB. has arrivedC. are arrivingD. is arriving( ) 47. He _______ in bed all day long because he had a headache.A. lieB. layC. laidD. lied( ) 48. Would you _______ your voice a little so that everyone can hear youA. riseB. putC. liftD. raise( ) 49. More and more people began to _______ that good health means good wealth.A. learnB. understandC. considerD. realize1---5 D C A B B; 6---10 C A A B C; 11---15 B C C C B; 16---20 C A C D D1—5 CADCB 6—10 ADCDC 11—15 BDDCD 16—20 DAACB21—25 BACAD 26—30 CCDBD 31—35 CDCDC 36—42 BBDCDBA1—5 BCCBB 6—10 CAABB 11—15 ADDCC 16—20 BCAAA 21—25 ACABB 26—30 DCDD1—5 CCACB 6—10 CAACC 11—15 CDACD 16—20 ABCBA 21—25 BBBDD26—30 DBCAB 31—36 CDDBB 36—40 DCCBB 41—45 ACDBA 46—49 BBDD。

动词按其动作发生的方式、发生过程的长短可分为延续性动词与非延续性动词。

一 . 延续性动词表示能够延续的动作 , 如 :learn, work, stand, lie, know, walk, keep, have, wait, watch, sing, read, sleep, live, stay等。

延续性动词可以与表示时间段的状语连用。

表示时间段的短语有 :for+一段时间 , for 2 years; since从句 ,since he came here; since+时间点名词 ,since last year, since 5 days ago; how long; for a long time 等。

例 :He has lived here for 6 years. You can keep the book for 5 days. I stayed there for 2 weeks last year. How long did you stay there last year?二 . 非延续性动词也称终止性动词、瞬间动词 , 表示不能延续的动作 , 这种动作发生后立即结束。

如 :open, die, close, begin, finish, come, go, move, borrow, lend, buy等。

非延续性动词在肯定句中与表示时间点的状语连用, 如:two years ago; at 5o'clock;例 :He died 5 years ago.否定的终止性动词可以与表示时间段的时间状语连用。

例 :I haven't left here for 3 years. I haven't heard from him for 3 weeks.三 . 延续性动词与非延续性动词之间的转换:leave --- be away, borrow --- keep, buy --- have, begin/start --- be on, die --- be dead, finish --- be over, join --- be in+组织机构 , be a member of+组织机构 , open sth --- keep sth open, fall ill --- be ill, get up---be up, catch a cold --- have a cold, come here --- be here, go there --- be there, become --- be, come back --- be back, fall asleep --- be asleep, get to/ arrive/reach --- be (in, leave --- be away from, get to know --- know, go (get out →be out, put on→ wear ; catch a cold→have a cold等。

非延续性动词与延续性动词之间的转换作者：张涛来源：《中学英语园地·初三版》2008年第09期在英语中，work，study，keep，live，know，wait等动词表示的动作或状态是可以延续的，被称为延续性动词。

在动词的现在完成时态中，延续性动词可以和表示一段时间的状语连用，但是，像come，go，arrive，leave，buy，join，die，begin等动词表示的动作是短暂的，不可延续的，被称为非延续性动词，它们不能和表示一段时间的状语连用。

同学们在使用这两类动词作谓语动词时，常常出错。

例如：(误) Li Ming has bought the book for three days.(正) Li Ming has had the book for three days.(误) My father had joined the Party ten years ago.(正) My father has been in the Party for ten years.如果要表示动作的延续性，就要把非延续性动词转换成相应的延续性动词或短语，具体转换如下：come/go/reach/arrive → be in/at，leave → be away from，borrow → keep，buy → have，join → be in/be a member of，die → be dead，start/begin → be on，finish/end → be over，open → be open(adj.)，close → be closed (adj.)，marry → be married使用这两类动词时，我们还应注意以下两个问题：1. 非延续性动词的否定式可以与for，since引起的时间状语连用。

例如：She hasn’t bought any new clothes since last year.2. 非延续性动词不能与for，since引起的表示一段时间的状语连用，但可以用其他句式来表示同一意思。

延续性动词与非延续性动词及其转换动词按其动作发生的方式、发生过程的长短可分为延续性动词与非延续性动词。

一. 延续性动词表示能够延续的动作,如：learn, work, stand, lie, know, walk, keep, have, wait, watch, sing, read, sleep, live, stay等。

延续性动词可以与表示时间段的状语连用。

表示时间段的短语有: ⑴for+一段时间, 如：for 2 years; ⑵ since从句, 如 since he came here; since+过去时间点名词, 如 since last year, since 5 days ago. 例: He has lived here for 6 years. You can keep the book for 5 days.二. 非延续性动词也称终止性动词、瞬间动词, 表示不能延续的动作,这种动作发生后立即结束。

如: open, die, close, begin, finish, come, go, move, borrow, lend, buy等。

非延续性动词在肯定句中与表示时间点的状语连用，如：two years ago; at 5 o'clock;例: He died 5 years ago.三.延续性动词与非延续性动词之间的转换：例： He left five minutes ago. = He has been away for five minutes.这句话的意思是指他离开的动作是5分钟之前发生的，是过去时。

也就是说从他离开到现在已经有五分钟了，这个动作是延续的，要用现在完成时，并且要把原来的短暂性动词改为延续性动词。

下面是一些短暂性动词及相应的延续性动词，须牢记。

leave --- be away, borrow --- keep, buy --- have, begin/start --- be on, die --- be dead, finish --- be over,join --- be in+组织机构, be a member of+组织机构, open sth --- keep sth open, fall ill --- be ill, get up---be up,catch a cold --- have a cold, come here --- be here,go there --- be there, become --- be, come back --- be back,fall asleep --- be asleep, get to/ arrive/reach --- be (in), leave --- be away from, get to know --- know,go (get) out →be out， put on→ wear； catch acold →have a cold等。