since和for的用法

1、since 和 for 的用法 (用于现在完成时 )表示过去已经开始持续到现在的动作或状态常用的时间状语有： for, since, how long, so far, these days等。1. since :a).since +时间点年代时刻数一段时间 +agob).现在完成时：主句 (主语 +have/has +延续性动词的过去分词 )+ since + 从句一般过去时c) It 时s间+段 +since +短暂性动词的过去式d).时间段 +has passed +since 短+暂性动词的过去式 for +一段时间练习：用 since 和 for 填空1)_ two years2)_

2、 two years ago3) _ last month4)_ 19995)_ yesterday6)_ 4 o clock7)_ 4 hours8)_ an hour ago9)_ we were children10) _ lunch time11) _ she left here12). He has lived in Nanjing _ the year before last.13). I ve known him _ we were children.14). Our teacher has studied Japanese _ three years.15). She has

3、been away from the city _ about ten years.16). It s about ten years _ she left the city.2. for: for + 一段时间 = since +一段时间 + ago3. 与时间段连用时，短暂性动词应改为相应的延续性动词。1) come/go to - be at /in2)leave -be away from3)buy -have4) borrow /lend -keep4)open -be open5)close-be closed6) die-be dead7) start/begin -be on8

4、) join -be in /be a member of /be a soldier9) becomebe10) fall asleep -be asleep11)catch a coldhave a cold12) have/has gone to have been in 13) put on wear14) finish/endover15) marry be marriedbe练习： .短暂性转换延续性1) His grandfather died two years ago ._two years _ his grandfather _.Two years _ _ _ his gr

5、andfather _.2) I became a teacher in 2000.3) The shop closed two hours ago.4) The door opened at six in the morning.The door _ _ _ for six hours.5) He left Fuzhou just now.精选文库He _ _ _ _ Fuzhou for five minutes.6) The film began two minutes ago.The film _ _ _ for _ _.How time flies!7) They borrowed

6、it last week.They _ _ it since _ _.8) I bought a pen two hours ago.I _ _ a pen for _ _.9) They married in 1990.They _ _ _since _.10) The meeting finished at six.The meeting _ _ _ for six hours.11) My brother joined the army two years ago.My brother _ _ a _ for _ _. My brother _ _ in _ _ for two year

7、s.12) I put on my glasses three years ago.I _ _ my glasses for _ _.选择1. Three years _since I _ you last time.A. have passed; metB. has passed; metC. passed; have met2. He has been here _ he left his hometown.A. sinceB. inC. for3. He _the English-Chinese dictionary for about twenty years，but it is st

8、ill new What a careful man!A. has boughtB. has borrowedC. has had4.-When did China _ the WTO?-China _ the WTO for several years.A. join; has been a member ofB. join; has joinedC. take part in; have been in5.How long have you _ the book?A. boughtB. borrowedC. kept6. How time flies! Several years _ si

9、nce we started our middle school life. We will keep the pleasant experiences in our minds.A. have passedB. has passedC.will pass7. Mr Fan _ this bike in 2005. He _ it for 10 years.A.bought,has boughtB.has bought, has hadC. bought, has had8. He _ in our school for 20 years and he _ here in 1977.A. ha

10、s taught; cameB. has taught; has comeC. taught; cameD. has teached; hascame9.They are late. The film _ for five minutes.A. has begunB. has startedC. has been onD. began10.We have been friends since _.A. five yearsB.five years agoC. five years before11.He has lived there _ 1992.A. sinceB. forC. after

11、12.Mike _ the bike for a month.-2精选文库A. has boughtB. has hadC. has borrowed13.Hehishomeforten yearsA. hasleftB. leftfromC. hasbeen away from14.May _ the book for two weeks.A. borrowedB. lentC. keptD. bought15.I _ the job since 2002.A: haveB: hadC: have had16.He has been a student_two years.A inB onC afterD for写出喜面动词的 过去式和过去