since的用法總結
以下是小編為大家整理的since的用法總結,希望可以幫助到你們提高英語水平!
since釋義
prep.從…以來; 自從…之后; 自從;
adv.以后，此后; 后來; (距今幾年)以前; (從那時候起幾年)以前
conj.自從…以來; 自從…的時候起; 既然; 因為
since的用法
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 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 haven’t 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：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 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。
since的用法例句
(表示時間)從…以來; 自從…之后
I have lived here since January.
自一月份以來, 我一直住在這里。
He had seen her only once since the meeting.
自從那次會議以來, 他只見過她一次。
He's been working in a bank since leaving school.
自從畢業(yè)后, 他就一直在一家銀行工作。
I have not seen him since then.
從那以后我再也沒見過他。
從過去某時間以來[以后, 到現(xiàn)在]
He disappeared many years since.
他多年以前就不知去向。
Her husband died 10 years ago but she has since remarried.
她丈夫于十年前去世, 但她后來又嫁人了。
I've long since forgotten what our quarrel was about.
我早就忘掉我們?yōu)槭裁闯臣芰恕?/p>
It was not long since that I returned.
我是在不久前回來的。
He came to London 3 years ago and has lived here ever since.
他三年前來到倫敦, 此后就一直住在這里。
自從(過去某事)以來[以后, 到現(xiàn)在]
Since I left college, I have not seen him.
自從我離開大學以后, 就沒有見過他了。
They have never been to see me since I was ill.
自從我生病之后, 他們一直沒來看過我。
Since I have owned a bicycle, I have gone to school by it every day.
自從我有了一輛自行車后, 我每天騎車上學。
因為; 既然; 由于
Since it is late I shall go home now.
由于時間晚了, 我現(xiàn)在要回家了。
Since you are so sure of it he'll believe you.
既然你對此這么有把握, 他會相信你的。
since的用法練習題
1. He has ____ the army for ten years and now is an officer.
A.gone into
B.joined in
C.been in
D.come into
答案：C.(其余三組動詞均為瞬間動詞，不能和段時間連用。)
2. You don't have to describe her. I _____ her several times.
A.had met
B.have met
C.met
D.meet
答案：B.
I _____ on the door for ten minutes now without an answer.
A.was knocking
B.am knocking
C.knocking
D.have been knocking.
答案:D。 因為該句是說到目前為止已經敲了10分鐘了，但沒人應答。動作一直持續(xù)十分鐘。因此完成進行時態(tài)是最合適的。
for和since的用法區(qū)別
1，Since +時間點，具體時間
“自從、、、、以來，從、、、以后” 用來說明動作起始時間
I have been in Beijing since 2010.
2，F(xiàn)or + 時間段，用來說明動作延續(xù)時間長度，因此句中的謂語動詞，也應該是延續(xù)性動詞。
I have been in Beijing for one year。
We have learnt English for about three years.
I have been here for 3 days. (對)
I have arrived here for 3 days.(誤)
for和since的用法例句
例句比較
he has been dead for three years
he has been dead since three years ago
He has studied English since 2003
He has studied English since he was ten years old
for和since的用法練習題
用since和for填空
1) ______ two years2) _______ two years ago3) _______ last month
4) ______ 19995) _______ yesterday6) _______ 4 o’clock
7) ______ 4 hours8) _______ an hour ago9) _______ we were children
10) _____ lunch time11) ______ she left here
12). 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 been away from the city ___________ about ten years.
16). It’s about ten years __________ she left the city.
選擇題
1. Three years ________since I ________ you last time.
A. have passed; metB. has passed; metC. passed; have met
2. He has been here _______ he left his hometown.
A. since B. in C. for
3. —He ________the English-Chinese dictionary for about twenty years，but it is still new.
—What a careful man!
A. has bought B. has borrowed C. has had
4. ---When did China _____ the WTO?---China _____ the WTO for several years.
A. join; has been a member of B. join; has joined C. take part in; have been in
5. How long have you _____ the book?
A. bought B. borrowed C. kept
6. How time flies! Several years _______ since we started our middle school life. We will keep the pleasant experiences in our minds.
A. have passed B. has passed C.will pass
7. Mr Fan _____ this bike in 2005. He ______ it for 10 years.
A.bought, has bought B.has bought, has had C. bought, has had
8. He ___ in our school for 20 years and he ___ here in 1977. ?A. has taught; came B. has taught; has come C. taught; came D. has teached; has came
9.They are late. The film ___ for five minutes. ?A. has begun B. has started C. has been on D. began
10.We have been friends since _____.
A. five years B.five years ago C. five years before
since then的用法
since then意為 "從那時以來"，通常與動詞的現(xiàn)在完成時連用，指從過去某一時刻起到現(xiàn)在為止的一段時間。
Since then 前后各接什么時態(tài)
Since then 前后一般接現(xiàn)在完成時，從那以后，現(xiàn)在完成時表示過去的某件事對現(xiàn)在還有影響， 現(xiàn)在完成時的標志性時間狀語already , ever , never , yet , just , before, still , lately ,since , for a long time ,up to now, until,so far,in the last few years/weeks/mouths , till now,recently
since then的用法例句
Since then, he has developed another bad habit.
從那以后,他養(yǎng)成了另一種壞習慣。
He hasn't come close to those numbers since then.
自那以后，他從沒有達到那賽季的表現(xiàn)。
Ah, times are greatly changed since then!'
“啊，從那時起，世道可變得多厲害呀!”
Exactly three years have passed since then.
從那時起，整整3年過去了。
ever since釋義
自從;從那時到現(xiàn)在;自…以后;從…起
ever since的用法
1.ever since 的結構：(作為連詞)=since 完成時態(tài)---- ever since +主+動詞簡單過去式
例：I have known him ever since he was a child. ?他從小我就認識他了。 ?這種用法同since 差不多，不過 ever since 比 since 用得少。
再如：We have lived in Shanghai ever since we came to China.(自從我們來到中國之后就住在上海。) ?
2.以上所說的 ever since 作為連詞。 ?
ever since 也可作為副詞，解釋“此后”(就一直...) ?
例：
1)He fell ill at Christmas and has been ill ever since. ?他在圣誕節(jié)生病了此后就一直不適。(has + be ill)
2)He left home last year and has been away ever since. ?他去年離家走了，此后一直在外面。(has + be away) ?3)He fell off his horse a week ago and has been in bed ever since. ?一周前他從馬背上跌下來，從那以后就一直躺在床上。 ?4)He went to Turkey in 1950 and has lived there ever since. ?他在1950年去土耳其，此后就一直住在那里。 ?
3. has not been able to 這實際上就是 be able to 加上 have 罷了。
所謂 be able to 就是“有可能”不是“能”(can)。如果一直，始終沒有可能就是has not been able to ,這很簡單。 ?如果 it has not been easy. 就是“那件事一直不是輕而易舉的。”完成時態(tài)不一定都解釋為“已經”，有時要解釋為“一直”。 ?相關詞匯：?have trouble with sb. 與某人發(fā)生了糾紛 ?return home 不可用 return to home ?at night 不可用 at the night ?because of 由于 ?even once 即使是一次 ?have effect 產生效果 ?turn ... to 把···變?yōu)?/p>
ever since的用法例句
1、He's been there ever since you left!
自從你離開后他就一直在那里!
2、I simply gave in to him, and I've regretted it ever since
我就向他屈服了，從那以后我一直后悔。
3、I've had the hots for him ever since he came to college.
自從他來上大學后，我就對他春心萌動。
4、The girl has grown prettier than ever since I saw her a year ago.
一年不見，小姑娘出落得更漂亮了
since的用法總結相關文章：
2.Since的用法
5.英語語法大全總結