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短语有:1.for+一段时间, eg: for 2 years; for a long time等2.since从句,since he came here;3.since+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, lose, give,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。
故不能与表达“段”的长时间状语连用，不论是在进行时还是现在完成时中。
下面的例句是正确的：1. He is dying.2. He has died.一个生物体是死是活，界与其终结生命的前与后的一霎那，如果上述例句加上了表达段的时间状语，试请问：该人是死是活？但是，有几个表示去向的非延续性动词如go, come, start, leave 等，可以同表示时间段的状语for 短语连用。
但要注意，这种用法的for 短语表示的不是句中谓语动词延续的时间，而是该动词动作完成后再做某事所需要的时间。
例如：1. She has gone to Nanjing for three days. (= She’s come here, intending to stay for three days.)2. Alice has left for Paris for three months. (= Alice has left for Paris, intending to stay there for three months.)3. We are starting for Shanghai for two weeks. (= We are going to Shanghai, and we are planning to stay there for two weeks.)【注意】学生如果遇到与第一点所不符的情况，如本点所讲述，不要轻易下结论为“错题”，应该认真分析后再做结论。
比如我们学过了这样的结构：make somebody do something;而我们常可见到这样的句子：He made a candle to give light.在这个句子中的宾语后面明显带了to ，与短语所表达的不符，但我们不要忘了：make 的基本意思为“制造”，并且，不定式结构在短语中充当宾语补足语，而在例句中充当状语。
非延续性谓语动词后有非谓语动词时，可与表示一段时间的状语连用，这时，时间状语所修饰的不是句中的谓语动词，而是非谓语动词。
例如：1. She went to work for two weeks. (for two weeks 修饰to work)如果要与for+ 时间段，since+年份，since+时间段+ago，how long连用时，瞬间性动词要变延续性动词。
三.延续性动词与非延续性动词之间的转换：例：（1）他死了三年了。
误：He has died for three years.正：He has been dead for three years. 正：He died three years ago.正：It is three years since he died.正：Three years has passed since he died.(2) 他来这儿五天了。
误：He has come here for five days.正：He has been here for five days.正：He came here five days ago.正：It is five days since he came here.正：Five days has passed since he came here.(1)、(2)句中的die、come为终止性动词，不能与表示"段时间"的状语连用。
那么，应如何正确表达呢？可以采用下面的四种方法：(1)将句中终止性动词转换为相应的延续性动词, 如上面两例中的第一种正确表达方式.(2)将句中表示"段时间"的状语改为表示过去确定时间的状语，如下面两例中的第二种正确表达方式。
(3)用句型"It is+段时间+since..."表达原意，如上面两例中的第三种正确表达方式。
(4)用句型"时间+has passed+since..."表达原意，如上面两例中的第四种正确表达方式。
四、终止性动词可用于现在完成时否定式中，成为可以延续的状态，因而可与表示一段时间的状语连用。
如:1.He hasn't left here since 1986.2.I haven't heard from my father for two weeks.五、终止性动词的否定式与until/till连用，构成"not+终止性动词+until/till ..."的句型，意为"直到……才……"。
如：1. You can't leave here until I arrive.直到我到了，你才能离开这里。
2. I will not go to bed until I finish drawing the picture tonight.今天晚上直到我画完画，我才上床睡觉。
六、终止性动词可以用于when引导的时间状语从句中，但不可以用于while引导的时间状语从句中。
when表示的时间是"点时间"(从句谓语动词用终止性动词)，也可以是"段时间"(从句谓语动词用延续性动词)。
而while表示的是一个较长的时间或过程，从句谓语动词用延续性动词。
如：1. When we reached London, it was twelve o'clock. (reach为终止性动词) 2. Please look after my daughter while/when we are away. (be away为延续性动词短语)七、终止性动词完成时不可与how long连用(只限于肯定式)。
如:误：How long have you come here?正：How long have you been here?正：When did you come here?误区[ 一]瞬间动词的完成时误区之一是：现在完成时表达的是“从前发生的动作”，“延续到现在”。
而瞬间动词一瞬间便完成了从发生到结束的全过程，能有完成时吗？现在完成时虽然动作“发生在过去”但其“影响”持续到现在。
因整个存在的时间短，所以其完成时不与表达“段”的时间连用。
[ 二]瞬间动词的进行时误区二：leave, come 等终结性动词，没有进行时的形式。
例如come 这一个词，（尤其在肯定句中，可参见第四点）不与表达段的时间状语连用。
比如我们不说：He has come for days. 而要说：He came days ago. 或：It’s days since he came. 常说的He is coming. /He is leaving./ He is dying 等，并不是表示动作“正在进行”，而是表示“动作即将发生”。
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 openedC. was openD. opened4. Mary and Rose _______friends since they met in 2000.A. have madeB. have beenC. madeD. have become5.You mustn't ____until he comes back.A. be awayB. leaveC. be left6.The meeting _______ for a week now.A. has finishedB. has endedC. has been over7.Miss Gao ______ this school for nearly 5 years.A. has been inB. has come toC. has taught8.Ben ______ 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 dead11.He_____at eight yesterday afternoon.A. sleptB. was sleepingC. has sleepD. had slept12.He ________ the car for a week.A. boughtB. has boughtC. has had13.-----How long _____ you _____ ill ? -----Two weeks.A. did fallB. have, fellC. have, been14.Since 2000, he _____ his hometown.A. has leftB. has moved awayC. has been away from15.I'll lend you the book , but you can only ____ it for 2 days.A. borrowB. keepC. take16.The bus ______ on the road for 2 hours so far.A. has stoppedB. stoppedC. has been17.Are you _____ the jacket these days?A. wearingB. putting onC. dressingD. on18. He ________ foe 2 hours.A. got upB. has got upC. has been up19. Tom is ill in hospital. He _______ a cold for several days.A. isB. catchesC. has caughtD. has had20. ----- How long can I ______ the book? ------ Two weeks.A. borrowB. lendC. getD. keep练习答案1---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 D。