- 相關(guān)推薦
since的用法
since的用法1
1. It’s 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 mother?
since的用法2
1.B �！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：needn’t do sth.，所以選擇C項。
3、A�！皊ince引導(dǎo)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”。 “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(xí)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 won’t come back today意思是“自從他關(guān)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。
6.C。since引導(dǎo)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(yīng)從動作發(fā)生之時算起�！癐 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(xí)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。
since的用法3
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 haven’t seen him since then.1982年他離開這個村子，從那以后我再沒見過他。
2、She’s been working in a bank since leaving school.她中學(xué)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：
1.He left home two weeks ago and we haven’t 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.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(dǎo)原因狀語從句
作為連詞，since可引導(dǎo)原因狀語從句，表示因為;既然;鑒于：例如：
1. He didn’t come since he was busy.他因為忙，所以沒有來。
2. Since this method doesn’t work,let’s try anoter.既然這種方法不行，我們就試用另一種吧。
四.Since引導(dǎo)時間狀語從句
1.若since引導(dǎo)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(xué)校，他學(xué)習(xí)就非常努力。
We have been missing them since they left here自從他們離開這里，我們就一直很想念他們。
2.若since引導(dǎo)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(jié)束時算起”。例如：
I haven’t heard any noise since I slept. Sleep為持續(xù)性動詞，sleep的動作結(jié)束時，即“醒來”時，所以這句應(yīng)譯為“我醒后還未聽到任何聲音”。
3.若since引導(dǎo)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(yīng)從動作發(fā)生之時算起。例如：I haven’t 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(yīng)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(yīng)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 last 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(xí)
(一)單項選擇
1.—Do you smoke?
—_____ .It's two years since I smoked.
A.Yes，I do B.No，I don't C.Not too much D.Oh，but I wish I didn't
2.Since you are busy, you __________ tomorrow.
A. don’t need come B.need not come C. needn’t come D.mustn’t come
3.---Has he been home?
---______,he _________home since he graduated.
A. No; hasn't been B.Yes;has been C.No; isn’t D.Yes; is
4.They _________friends since they met in Shanghai.
A.haven’t been B.have been C. aren’t D. are
5.I_______here since he left the door open,but it seems that he won’t come back today.
A. have been waiting B.will have waited C.was waiting D.waited
6.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 B. since C. at D. in
8.-- 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)漢譯英：
1.他好久沒學(xué)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(dāng)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?
【since的用法】相關(guān)文章：
not的用法10-12
with的用法總結(jié)03-07
shall的用法？10-12
approve用法10-12
restrict的用法10-12
strange的用法10-12
welcome的用法10-12
interest的用法10-12
couple的用法10-12