【正文】 tood ....之后He left the classroom after he had finished his homework the other 在......之前 had worked in a bank for a year before he came soon as 一.....就（scarcely/hardly...when,no sooner than,the minute/moment,on/upon,directly等等）We began to work as soon as we got will write to you as soon as I get 自......以來到現(xiàn)在表示自過去的一個起點時間到目前(說話時間)為止的一段持續(xù)時間。Mr Green has taught in that school since he came to China three years ago.(還可以用作介詞，本句從句還可以用短語：since three years ago(自三年前以來)表示。They walked till /until it was Ming didn’t leave home till / until his father came the time 到......為止(所在句子的主句應(yīng)用現(xiàn)在或過去完成時)By the time he gets there , his father has already the time I got to school, the class had already , while, as引導(dǎo)的時間狀語從句。When truth is buried under the ground it grows, it chokes, it gathers such an explosive force that on the day it bursts out , it blows up everything with ，它在生長，它感到壓抑，它蓄存著這么一種爆炸性力量，一旦冒出，它就會炸破一切！Strike while the iron is 。You can feel the air moving as your hand pushes through ，你就能感覺到空氣在流動。, while和as的區(qū)別when引導(dǎo)的從句的謂語動詞可以是延續(xù)性的動詞，又可以是瞬時動詞。When she came in, I was eating.(瞬時動詞)When I lived in the countryside, I used to carry some water for him.（延續(xù)性的動詞）While引導(dǎo)的從句的謂語動作必須是延續(xù)性的，并強調(diào)主句和從句的動作同時發(fā)生（或者相對應(yīng)）。例如： While my wife was reading the newspaper, I was watching TV.(was reading是延續(xù)性的動詞，was reading和was watching同時發(fā)生)I like playing football while you like playing basketball.（對比）b, As表示“一邊??一邊”，as引導(dǎo)的動作是延續(xù)性的動作，一般用于主句和從句動作同時發(fā)生；as也可以強調(diào)“一先一后。一邊“的意思as 強調(diào)兩個動作同時進行，并表示對比時 用于發(fā)生時間較段時 d when還可以表示從句動詞的動作在主幾句動詞的動作”之前 “或”之后“發(fā)生。at that moment(正在那個時候) e while用于時間較長時強調(diào)兩個動作同時進行，并表示對比時 有時這三個連詞可以互換，有時不可以。主句動詞一般表達 “正在” “即將”.while, as不能代替She thought I was talking about her daughter, while, in fact, I was talking about my daughter.(表轉(zhuǎn)折，對比，when, as都不能代替它)While the alien was buying a souvenir, the girl called the police.(表示主句，從句的動作同時發(fā)生，while后引導(dǎo)的狀語從句的動詞必須是延續(xù)動詞不能是點動詞，因為它表示較長時間)Mother was worried because little Alice was ill, especially as(when/ while)father was away.(此時as ,when, while可通用)。還要注意主句和從句之間的時間關(guān)系。After表示主句動作發(fā)生在從句動作之后。例如：It will be four days before they e almost knocked me down before he saw father had left for Canada just before the letter had not been married four months before they were you think it over, please let me know what you we had finished the work, we went home.（從句用過去完成時，主句用一般過去時）。并且要注意的是：如果主句中的謂語動詞是瞬時動詞時，必須用否定形式；如果主句中的謂語動詞是延續(xù)性動詞時，用肯定或否定形式都可以，但表達的意思不同。t go to bed until（till）my father came 。I worked until he came 。t work until he came 。since引導(dǎo)的從句的謂語動詞可以是延續(xù)性的動詞，又可以是瞬時動詞。但在It is +時間+since從句的句型中，主句多用一般現(xiàn)在時。It is five months since our boss was in 。以來多長時間了(因為since +從句或名詞，表示一段時間)It is five years since we met last 。才)It was a long time before I went to sleep was an hour before(=until)the police soon as, immediately, directly, instantly, the moment, the instant, the minute, 等引導(dǎo)的時間狀語從句。例如：I will go there directly I have finished my ，我立即到那里去。As soon as I reach Canada, I will ring you ，就給你來電話。主句用過去完成時，從句用一般過去時。例如：He had no sooner arrived home than he was asked to start on another ，就被邀請開始另一旅程。Hardly had I sat down when he stepped ，他就進來了。 the time引導(dǎo)的時間狀語從句。例如： By the time you came back, I had finished this ，我已經(jīng)寫完這本書了。七 由each time, every time和whenever引導(dǎo)的時間狀語從句。Whenever that man says“To tell the truth”, I suspect that he39。You grow younger every time I see ，見你更年輕了。這兩個連詞表示“有多久??就多久”。I will fight against these conditions as long as there is a breath in my body!只要我一息尚存，我就要反對這種境況。【注意】此句型通常譯成“哪里??哪里就??”；主句在從句后面時，there可用可不用；如果主句在從句的前面時，一般都不用there。They were good they went, there they were warmly 。You should have put the book where you found 。句型2：Anywhere/ wherever+地點從句，+主句。而wherever本身就是個連詞，表示“在何處，無論何處”。二 知識擴展 there is a will , there is a 。(在限定性定語從句中對先行詞起著限定作用。(wherever=no matter where)無論何處，多用于句首。(諺語) she was wondering where to go , she met a ,要點： 表示狀語從句由連詞if, unless(=if not)意思為除非引導(dǎo)。t/ will not go to the party unless he goes there , 除非他也去.(如果他不去,我也不去.) will be late unless you leave ,你將會遲到的.(=If you don’t leave immediately, you will be late.)難點提示：用條件狀語從句時要注意時態(tài)的正確使用,當(dāng)主句是將來時的時候, will not leave if it isn’t fine ，一般現(xiàn)在時lThey are going to have a piic if it doesn’t rain next , 一般現(xiàn)在時 原因狀語從句要點: 由連詞because, since, as引導(dǎo), 也可由for, now that 等詞引導(dǎo) 目的、結(jié)果狀語從句要點： 目的狀語從句由連詞that, so that,