终止性动词与延续性动词之间的转换
终止性动词(也可称为非延续性动词,瞬间动词,点动词或短暂性动词),如begin,start,die,buy,leave, come等,表示动作的发生与结束于一瞬间完成,不能再延续,所以它的现在完成时不能和表示延续的时间状语连用,
即不能与表示一段时间的状语,for+时间段, since+时间点/从句连用,也不能用在how long引导的特殊疑问句中.
终止性动词要表示持续时, 可用以下方法:
⑴.将时间状语改为时间段+ ago,句中谓语动词用一般过去时.
eg.我弟弟参军两年了. My brother joined the army two years ago.
⑵.若保留for+时间段,since+时间点/从句, 或用在how long 句型中,则需将终止性动词改为相应的状态动词或延续性动词
The film started two hours ago．→The film has been on for two hours．
常见短暂性动词与延续性动词的转换
Ⅰ. be 型
1. go there -- be there
e here—be here
e back—be back
4.die—be dead
5.leave—be away(from)
6.open—be open
7.close—be closed 8.go/get out—be out
9.finish/end-- be over 10.become—be
11.get up—be up 12.begin/start(上演)—be on
13. fall asleep-- be asleep 14.fall ill – be ill
15. move here/there --be here/there 16. get to… --be at/in
17.arrive at / in… -- be at / in 18.reach…-- be at/in
19.get married --be married 20.join—be in/be a member of
join the Party-- be in the Party / be a Party member/ be a member of the Party
Ⅱ. 实义动词型
1.borrow-- keep
2. buy——have
3.Begin to teach—teach
4. get to know—know
5.Put on—wear
6. receive--have
7.catch a cold—have a cold 8.hear from—have a letter from
［注意点］
1．上述例词除borrow／buy／catch需转换为keep ／have外，其余均为“be＋adj．／adv．／n．”结构。

2．非延续性动词并非不可用于现在完成时态中，只是不能和表示“一段”时间的短语连用，但可与just，yet，already ，ever，never等连用。

例如：
They have already come．
He has just gone out．
延续性动词与非延续性动词专项练习
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 ________ for 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
DCABB CAABC BCCCB CACDD。