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 oclock; 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 havent left here for 3 years. I havent 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 mustnt ________ 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.Ill 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