Book 1 Module4 A Lively City 素材.docx

1、Since用法总结一.Since作为介词,后接某一确定的时间点,主句谓语动词是持续性动词,常与现在完成时态、现在完成进行时态或过去完成时态连用。例如:1、He left the village in 1982 and I havent seen him since then.1982年他离开这个村子,从那以后我再没见过他。2、Shes been working in a bank since leaving school.她中学毕业后就一直在一家银行工作。3.He had spoken to her only once since the party. 自从那次聚会以来,他只跟她说过一次话。二

2、.Since作为副词,表示从过去以来、以后或到现在的情形或状态,常与现在完成时态连用。例如:1.He left home two weeks ago and we havent heard from him since. 他两周前离开了家,到现在我们一直没有他的消息。2.He came to Zhenjiang 6 years ago and has lived here (ever) since.他6年前来到镇江,从此便住在这里。三.since引导原因状语从句作为连词,since可引导原因状语从句,表示因为;既然;鉴于:例如:1.He didnt come since he was busy

3、.他因为忙,所以没有来。2.Since this method doesnt work,lets try anoter.既然这种方法不行,我们就试用另一种吧。四.Since在特殊句型中的应用句型I:“It is(has been)+时间+since+持续性动词的过去时”,表示“自从以来到现在已有多久。”例如:It has been quite some time since I was last in London.我上次离开伦敦至今颇有一段时间了。句型II:“It was+时间+since+持续性动词的过去完成时”,表示“从到过去某时间点以来”,例如:It was three years s

4、ince we had been here.那时我们在这已呆了三年。1. Do you smoke?_ .Its two years since I smoked.A. Yes, I doB. No, I dontC. Not too muchD. Oh, but I wish I didnt2. Since you are busy, you _ tomorrow.A. dont need comeB. need not comeC. neednt comeD. mustnt come3. -Has he been home?-_, he _home since he graduated.A

5、. No; hasnt beenB. Yes; has beenC. No; isntD. Yes; is4. They _friends since they met in Shanghai.A. havent beenB. have beenC. arentD. a re5.I_here since he left the door open, but it seems that he wont come back today.A. have been waitingB. will have waitedC. was waitingD. waited6.I _ from him since he has lived here.A. heardB. have heardC. have never heardD. have been hearing7. He came to China _ 2019.A. fromB. sinceC. atD. in8.- Excuse me. Did you notice whether the No.18 bus had gone by?-I dont know_ I began to stand here just now.A. asB. whenC. sinceD. while