as soon as…一…就…= directly / immediately / instantly…
　　= the second / the minute / the moment / the instant…
　　Eg. He came around to see me as soon as / the moment/ immediately he checked in the hotel.
　　他剛一入住賓館就來(lái)看我.
　　They informed us the news immediately / directly they got it.
　　他們一得到消息就通知了我們.
　　The policeman came to the spot the moment / the instant / the minute she heard of the accident.一聽(tīng)說(shuō)事故,這位警察就到了現(xiàn)場(chǎng).
　　2.….before….
　　(1). 沒(méi)來(lái)得及…就…
　　The roof fell before he had time to dash into the room to save his baby.
　　他還沒(méi)有來(lái)得及沖進(jìn)房間把孩子就出來(lái),房頂就塌了.
　　He ran off before I could stop him.
　　To my great disappointment , my favorite singer left the concert before I could have a word with him.
　　(2).過(guò)了多久才怎么樣,動(dòng)作進(jìn)行到什么程度才怎樣
　　They walked about thirty miles to the west before they saw a village.
　　They worked day and night about three days before everything returned to normal.
　　Three years passed before I knew it.
　　3.It was + 時(shí)間段 + before….過(guò)了多久才…. ;
　　It was not long before… 不久就…
　　It will ( not ) be + 時(shí)間段 + before …要過(guò)多久 ( 不久)…..才…..
　　Eg. It was not long before he sensed the danger of the position.
　　It was three years before he came back.
　　It will be half a year before you graduate from this school.
　　4. no sooner …than…= hardly…when…一…就…., 剛剛…就…
　　No sooner / hardly + 過(guò)去完成時(shí),than / when + 一般過(guò)去時(shí)
　　如果no sooner, hardly 位于句首, 主句要倒裝.
　　He had hardly sat down to have a rest when the door bell rang and in came Allan.
　　No sooner had he got off the train than his daughter ran towards him.
　　Hardly had we arrived when she started crying to go home.
　　5. once 一旦…., 表示時(shí)間和條件
　　Once you understand this rule, you will have no further difficulty.
　　Once you have decided to do something, you should do it well.
　　Once you enter the chemistry lab, you should follow the teacher’s instructions.
　　6. since … 自從….以來(lái)
　　Since 引導(dǎo)的從句不論是延續(xù)性或非延續(xù)性動(dòng)詞, 都表示的是動(dòng)作或狀態(tài)的完成或結(jié)束.
　　注意一下句子翻譯:
　　Since he lived in Nanjing, I have not heard from him. (= since he left Nanjing…)
　　自從他離開(kāi)南京以來(lái),我沒(méi)有收到過(guò)他的信.
　　Since she was in Yangzhou, she has kept in touch with her former friends. ( since she left Yangzhou…)
　　她離開(kāi)揚(yáng)州以來(lái),一直同過(guò)去的朋友保持著聯(lián)系.
　　對(duì)比:
　　1). I have never seen him since he was ill.
　　他病好后,我就再也沒(méi)有見(jiàn)到他.
　　2). I have never seen him since he fell ill.
　　他生病以后我就再也沒(méi)有見(jiàn)過(guò)他.
　　It is / ( has been ) + 時(shí)間段 + since + 過(guò)去式
　　It is / has been two years since his father died.
　　= his father has been dead for two years. = his father died two years ago.
　　他的父親去世兩年了.
　　It has been 8 years since I graduated from university.
　　= I graduated from university 8 years ago.
　　It is 3 years since he smoked. 他三年不吸煙了.(即,從句動(dòng)詞延續(xù)性的,譯成否定意義;從句動(dòng)詞非延續(xù)性的,譯成肯定意義.)
　　It is 3 years since he left school.-----他畢業(yè)三年了.
　　7….until…直到…時(shí)候; not…until…直到…才…
　　You are to stay here until / till your mother comes back.
　　The meeting was put off until ten o’clock.
　　Not until we watched the Earth Day program on TV did we know much about global warning.
　　= We did not know much about global warning until we watched the Earth Day program.
　　= It was not until we watched the Earth Day program on TV that we knew much about global warming.
　　Not until he failed in the exam did he realize that he had wasted much time playing computer games.
　　8. …when…引導(dǎo)并列分句, “當(dāng)時(shí),突然”,強(qiáng)調(diào)另一動(dòng)作的突然發(fā)生.
　　One day Chuck was on a flight across the Pacific Ocean when suddenly his plane crashed. Chuck survived the crash and landed on a deserted island.
　　I was walking along the river when I heard a drowning boy crying for help.
　　I was about to leave when it began to rain.
　　對(duì)比: A: I was walking along the street when I caught sight of a tailor’s shop.
　　B: I was walking along the streets. Just at that moment I caught sight of a tailor’s shop.
　　9. while = although盡管
　　While I admit that the problem is difficult, I don’t think that it can’t be solved.
　　While I admit his good points, I can see his shortcomings.
　　While I was angry with her, I didn’t lose my temper.
　　10. where 地點(diǎn)狀語(yǔ)
　　You should put the book where it was.
　　Persistent people begin their success where others end in failure.
　　Where there is a will, there is a way.
　　Where men are greedy, there is never peace.
　　Go where you should, keep on studying.