since用法小結24588

1、【精品文檔】如有侵權，請聯(lián)系網(wǎng)站刪除，僅供學習與交流since用法小結24588.精品文檔.Since 用法小結  一Since作為介詞，后接某一確定的時間點，主句謂語動詞是持續(xù)性動詞，常與現(xiàn)在完成時態(tài)、現(xiàn)在完成進行時態(tài)或過去完成時態(tài)連用。例如：    1、He left the village in 1982 and I havent seen him since then.1982年他離開這個村子，從那以后我再沒見過他。    2、Shes been working in a bank since leaving sch

2、ool.她中學畢業(yè)后就一直在一家銀行工作。    3.He had spoken to her only once since the party. 自從那次聚會以來，他只跟她說過一次話。    二Since作為副詞，表示從過去以來、以后或到現(xiàn)在的情形或狀態(tài)，常與現(xiàn)在完成時態(tài)連用。例如：    1He left home two weeks ago and we havent heard from him since. 他兩周前離開了家，到現(xiàn)在我們一直沒有他的消息。    2

3、He came to Zhenjiang 6 years ago and has lived here (ever) since.他6年前來到鎮(zhèn)江，從此便住在這里。    三since引導原因狀語從句    作為連詞，since可引導原因狀語從句，表示因為；既然；鑒于：例如：    1  He didnt come since he was busy.他因為忙，所以沒有來。    2  Since this method doesnt work, lets

4、 try another.既然這種方法不行，我們就試用另一種吧。    四Since引導時間狀語從句    1若since引導的狀語從句的謂語是終止性動詞的過去時，則從句表示的時間是“從動作開始的那一時刻起”。例如：    He has studied very hard since he came to our school.自從他來到我們學校，他學習就非常努力。    We have been missing them since they left here自從他們離開

5、這里，我們就一直很想念他們。    2若since引導的狀語從句的謂語動詞是持續(xù)性動詞或表示狀態(tài)動詞的過去時時，則從句表示的時間是“從動作或狀態(tài)結束時算起”。例如：    I havent heard any noise since I slept. Sleep 為持續(xù)性動詞，sleep的動作結束時，即“醒來”時，所以這句應譯為“我醒后還未聽到任何聲音”。    3若since引導的狀語從句的謂語為持續(xù)性動詞的現(xiàn)在完成時，則表示動作和狀態(tài)延續(xù)到現(xiàn)在（說話時刻），其表示的時間的起點應從動作發(fā)生之時算起。例如

6、：I havent heard from him since he has lived there。 這里has lived表示動作的持續(xù)性，時間的起點應從：“開始居住”時算起。因此此句可理解為“自從他（開始）住在那兒起，我就一直沒收到他的來信”。    五Since在特殊句型中的應用    句型I：“It is （has been）+時間+since+持續(xù)性動詞的過去時”，表示“自從以來到現(xiàn)在已有多久。”例如：    It has been quite some time since I was las

7、t in London.我上次離開倫敦至今頗有一段時間了。句型II：“It was+時間+since+持續(xù)性動詞的過去完成時”,表示“從到過去某時間點以來”，例如：It was three years since we had been here.那時我們在這已呆了三年。六鞏固練習   （一）單項選擇1Do you smoke？_ It's two years since I smokedAYes，I do  BNo，I don't   CNot too much   DOh，but I wish I did

8、n't2Since you are busy, you _ tomorrow.   A. dont need come    B. need not come   C. neednt come   D. mustnt come    3. -Has he been home? -_, he _home since he graduated.  A. No; hasn't been    B. Yes;

9、 has been   C. No; isnt     D. Yes; is  4They _friends since they met in Shanghai.  A. havent been   B. have been  C. arent    D. are   5. I_ here since he left the door open, but it seems that he wont come bac

10、k today.  A. have been waiting   B. will have waited  C. was waiting   D. waited6. I _ from him since he has lived here.  A. heard    B. have heard   C. have never heard D. have been hearing 7. He came to China _ 1998.A. from  

11、60;  B. since    C. at   D. in8. - Excuse me. Did you notice whether the No.18 bus had gone by?-Not _     _  I began to stand here.A. as      B. when     C. since  D. while   （二）漢譯

12、英：1他好久沒學英語了。2. 自從我生病以來，他從未來看過我。3. 自從我病愈以來，他從未來看過我。4. 約翰現(xiàn)在和父母一起住在紐約，他不當教師已經(jīng)三年了。5自從我們看望你母親以來到現(xiàn)在有多長時間了？參考答案（一）：1B ?！癐t is （has been）+時間+since+持續(xù)性動詞的過去時”，表示“已有多久沒了”。 It's two years since I smoked意思是“我兩年沒有抽煙了，故選擇B項。2、C。不必做某事：neednt do sth.，所以選擇C項。3、A?！皊ince引導的時間狀語從句的謂語是終止性動詞的過去時，則從句的時間是“從動作開始的那一時刻算起”

13、。 “he hasn't been home since he graduated”表示“自從他畢業(yè)以來，他就離開了家”，故選擇A項。4、B。用法同練習3?！癟hey .have been friends since they met in Shanghai”，自從他們在上海相識以來，一直是朋友。故選擇B項。5.A 。I have been waiting here since he left the door open, but it seems that he wont come back today意思是“自從他關上門以來，我一直在等他，但他是乎今天回不來了”。故選擇A項。

14、60;6.C。since引導的時間狀語從句的謂語為持續(xù)性動詞的現(xiàn)在完成時，則表示動作和狀態(tài)延續(xù)到現(xiàn)在（說話時刻），其表示的時間的起點應從動作發(fā)生之時算起。“I have never heard from him since he has lived there ”意思是“自從他（開始）住在那兒起，我從未收到他的來信”。故選擇C項。7.D。表示時間點用in，句子時態(tài)是過去時，故選擇D項。8.C。用法同練習3。 “Not since I began to stand here”意思是“自從我開始站在這里就沒有注意到”。故選擇C項。（二）1. Its a long time since he studied English.2. He has never been to see me since I have been ill.3. He has never been to see me since I was ill.4. John is now with his parents in New York, it is already three years since he was a teacher .5. How long is it since we visited your