延续性动词和非延续性动词在过去进行时的句子中,比如I ___ (read)a newspaper while I ____ (wait)for the bus.我在等车的时候看报纸.为什么用was reading呢?还有还有!是不是只有延续性动词才能在这种句子中用be 加ing?

一一一一、、、、延续性动词和终止性动词的概念延续性动词和终止性动词的概念延续性动词和终止性动词的概念延续性动词和终止性动词的概念 英语中，动词按其动作发生的方式、动作发生过程的长短，可分为延续性动词和终止性动词。 延续性动词表示能够延续的动作，这种动作可以延续下去或产生持久影响。 如：learn, work, stand, lie, know, walk, keep, have, wait, watch, sing, read, sleep, live, stay等。 终止性动词也称非延续性动词、瞬间动词或短暂性动词，表示不能延续的动作，这种动作发生后立即结束。 如open, close, finish, begin, come, go, arrive, reach, get to, leave, move, borrow,buy等。 二二二二、、、、延续性动词的用法特征延续性动词的用法特征延续性动词的用法特征延续性动词的用法特征 1.延续性动词可以用于现在完成时延续性动词可以用于现在完成时延续性动词可以用于现在完成时延续性动词可以用于现在完成时，，，，其完成时态可与表示其完成时态可与表示其完成时态可与表示其完成时态可与表示"段时间段时间段时间段时间"的状语连用的状语连用的状语连用的状语连用。。。。表示表示表示表示"段时间段时间段时间段时间"的短语有的短语有的短语有的短语有：：：： for two years, during the past three years, since last year, how long等。如：I have learned English since I came here.自从我来到这儿就学英语了。 2.延续性动词不能与表示短暂时间的延续性动词不能与表示短暂时间的延续性动词不能与表示短暂时间的延续性动词不能与表示短暂时间的"点时间点时间点时间点时间"状语连用状语连用状语连用状语连用。。。。 如：It raind at eight yesterday morning.(误) rain为延续性动词，而at eight表示"点时间"，前后显然矛盾。如果用延续性动词表示一瞬间的动作，可以借助come, begin, get等终止性动词来表示。 上句可改为：It began to rain at eight yesterday morning.(正)又如： -When did you get to know Jack? -Two years ago. -Then you've known each other for more than two years. -That's right. 三三三三、、、、终止性动词的用法特征终止性动词的用法特征终止性动词的用法特征终止性动词的用法特征 1.终止性动词可用来表示某一动作完成终止性动词可用来表示某一动作完成终止性动词可用来表示某一动作完成终止性动词可用来表示某一动作完成，，，，因此可用于现在完成时因此可用于现在完成时因此可用于现在完成时因此可用于现在完成时。。。。如： The train has arrived.火车到了。 Have you joined the computer group?你加入电脑小组了吗？ 2.终止性动词表示的动作极其短暂终止性动词表示的动作极其短暂终止性动词表示的动作极其短暂终止性动词表示的动作极其短暂，，，，不能持续不能持续不能持续不能持续。。。。因此因此因此因此，，，，不可与表示一段时间的状语连用不可与表示一段时间的状语连用不可与表示一段时间的状语连用不可与表示一段时间的状语连用

顾名思义 延续性动词是一直都发生的

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 5 o'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.例:The old man died 4 years ago.----The old man has been dead for 4 years.---- It is 4 years since the old man died.----Four years has passed since the old man died.He joined the Party 2 years ago.-----He has been in the Party for 2 years.I bought the book 5 days ago.---- I have had the book for 5 days.
补充练习：
1.When he arrived at the bus stop,the bus ________ for 20 minutes.
A.has left B.had left C.has been away D.had been away
2.I ______ the League for 5 years so far.
A.joined B.have joined C.have been in
3.The factory ________ since the February of 1988.
A .has been open B.has opened C.was open D.opened
4.Mary and Rose _______friends since they met in 2000.
A.have made B.have been C.made D.have become
5.You mustn't ________ until he comes back.
A.be away B.leave C.be left
6.The meeting _______ for a week now.
A.has finished B.has ended C.has been over
7.Miss Gao ______ this school for nearly 5 years.
A.has been in B.has come to C.has taught
8.Ben ______ a teacher for 4 years .
A.has been B.has become C.was D.became
9.I ______ home for a week.
A.have returned B.have been back C.returned
10.How long _______ he ________
A.died B.has,died C.has,been dead
11.He ______ at eight yesterday afternoon.
A.slept B.was sleeping C.has sleep D.had slept
12.He ________ the car for a week.
A.bought B.has bought C.has had
13.-----How long _____ you _____ ill -----Two weeks.
A.did fall B.have,fell C.have,been
14.Since 2000,he _____ his hometown.
A.has left B.has moved away C.has been away from
15.I'll lend you the book ,but you can only _____ it for 2 days.
A.borrow B.keep C.take
16.The bus ______ on the road for 2 hours so far.
A.has stopped B.stopped C.has been
17.Are you _____ the jacket these days?
A.wearing B.putting on C.dressing D.on
18.He ________ foe 2 hours.
A.got up B.has got up C.has been up
19.Tom is ill in hospital.He _______ a cold for several days.
A.is B.catches C.has caught D.has had
20.----- How long can I ______ the book?------ Two weeks.
A.borrow B.lend C.get D.keep
Key:
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
如果你仔细看完这个并且完全理解了 肯定会对你英语学习有很大帮助