男人天堂日韩,中文字幕18页,天天伊人网,成人性生交大片免费视频

since的用法

時(shí)間:2022-09-05 00:47:18 學(xué)習(xí)英語(yǔ) 我要投稿
  • 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(shí)間+since+持續(xù)性動(dòng)詞的過(guò)去時(shí)”,表示“已有多久沒(méi)……了”。 It's two years since I smoked.意思是“我兩年沒(méi)有抽煙了,故選擇B項(xiàng)。

  2、C。不必做某事:needn’t do sth.,所以選擇C項(xiàng)。

  3、A!皊ince引導(dǎo)的時(shí)間狀語(yǔ)從句的謂語(yǔ)是終止性動(dòng)詞的過(guò)去時(shí),則從句的時(shí)間是“從動(dòng)作開(kāi)始的那一時(shí)刻算起”。 “he hasn't been home since he graduated”表示“自從他畢業(yè)以來(lái),他就離開(kāi)了家”,故選擇A項(xiàng)。

  4、B。用法同練習(xí)3!癟hey .have been friends since they met in Shanghai”,自從他們?cè)谏虾O嘧R(shí)以來(lái),一直是朋友。故選擇B項(xiàng)。

  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(lái),我一直在等他,但他是乎今天回不來(lái)了”。故選擇A項(xiàng)。

  6.C。since引導(dǎo)的時(shí)間狀語(yǔ)從句的謂語(yǔ)為持續(xù)性動(dòng)詞的現(xiàn)在完成時(shí),則表示動(dòng)作和狀態(tài)延續(xù)到現(xiàn)在(說(shuō)話時(shí)刻),其表示的'時(shí)間的起點(diǎn)應(yīng)從動(dòng)作發(fā)生之時(shí)算起!癐 have never heard from him since he has lived there ”意思是“自從他(開(kāi)始)住在那兒起,我從未收到他的來(lái)信”。故選擇C項(xiàng)。

  7.D。表示時(shí)間點(diǎn)用in,句子時(shí)態(tài)是過(guò)去時(shí),故選擇D項(xiàng)。

  8.C。用法同練習(xí)3。 “Not since I began to stand here”意思是“自從我開(kāi)始站在這里就沒(méi)有注意到”。故選擇C項(xiàng)。

since的用法3

  一.Since作為介詞,后接某一確定的時(shí)間點(diǎn),主句謂語(yǔ)動(dòng)詞是持續(xù)性動(dòng)詞,常與現(xiàn)在完成時(shí)態(tài)、現(xiàn)在完成進(jìn)行時(shí)態(tài)或過(guò)去完成時(shí)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(kāi)這個(gè)村子,從那以后我再?zèng)]見(jiàn)過(guò)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(huì)以來(lái),他只跟她說(shuō)過(guò)一次話。

  二.Since作為副詞,表示從過(guò)去以來(lái)、以后或到現(xiàn)在的情形或狀態(tài),常與現(xiàn)在完成時(shí)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(kāi)了家,到現(xiàn)在我們一直沒(méi)有他的消息。

  2.He came to Zhenjiang 6 years ago and has lived here (ever) since.他6年前來(lái)到鎮(zhèn)江,從此便住在這里。

  三.since引導(dǎo)原因狀語(yǔ)從句

  作為連詞,since可引導(dǎo)原因狀語(yǔ)從句,表示因?yàn)?既然;鑒于:例如:

  1. He didn’t come since he was busy.他因?yàn)槊,所以沒(méi)有來(lái)。

  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(shí)間狀語(yǔ)從句

  1.若since引導(dǎo)的狀語(yǔ)從句的謂語(yǔ)是終止性動(dòng)詞的過(guò)去時(shí),則從句表示的時(shí)間是“從動(dòng)作開(kāi)始的那一時(shí)刻起”。例如:

  He has studied very hard since he came to our school.自從他來(lái)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(kāi)這里,我們就一直很想念他們。

  2.若since引導(dǎo)的狀語(yǔ)從句的謂語(yǔ)動(dòng)詞是持續(xù)性動(dòng)詞或表示狀態(tài)動(dòng)詞的'過(guò)去時(shí)時(shí),則從句表示的時(shí)間是“從動(dòng)作或狀態(tài)結(jié)束時(shí)算起”。例如:

  I haven’t heard any noise since I slept. Sleep為持續(xù)性動(dòng)詞,sleep的動(dòng)作結(jié)束時(shí),即“醒來(lái)”時(shí),所以這句應(yīng)譯為“我醒后還未聽(tīng)到任何聲音”。

  3.若since引導(dǎo)的狀語(yǔ)從句的謂語(yǔ)為持續(xù)性動(dòng)詞的現(xiàn)在完成時(shí),則表示動(dòng)作和狀態(tài)延續(xù)到現(xiàn)在(說(shuō)話時(shí)刻),其表示的時(shí)間的起點(diǎn)應(yīng)從動(dòng)作發(fā)生之時(shí)算起。例如:I haven’t heard from him since he has lived there。這里has lived表示動(dòng)作的持續(xù)性,時(shí)間的起點(diǎn)應(yīng)從:“開(kāi)始居住”時(shí)算起。因此此句可理解為“自從他(開(kāi)始)住在那兒起,我就一直沒(méi)收到他的來(lái)信”。

  五.Since在特殊句型中的應(yīng)用

  句型I:“It is (has been)+時(shí)間+since+持續(xù)性動(dòng)詞的過(guò)去時(shí)”,表示“自從……以來(lái)到現(xiàn)在已有多久!崩纾

  It has been quite some time since I was last in London.我上次離開(kāi)倫敦至今頗有一段時(shí)間了。

  句型II:“It was+時(shí)間+since+持續(xù)性動(dòng)詞的過(guò)去完成時(shí)”,表示“從……到過(guò)去某時(shí)間點(diǎn)以來(lái)”,例如:It was three years since we had been here.那時(shí)我們?cè)谶@已呆了三年。

  六.鞏固練習(xí)

  (一)單項(xiàng)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(méi)學(xué)英語(yǔ)了。

  2.自從我生病以來(lái),他從未來(lái)看過(guò)我。

  3.自從我病愈以來(lái),他從未來(lái)看過(guò)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(lái)到現(xiàn)在有多長(zhǎng)時(shí)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