状语从句精讲精析

4.I knew nothing about it _______he told me. 5.It is more than five years ____we started to learn English. 6._____he talked on,he got more and more excited. 7.We should strike ____the iron is hot.
X. by the time 1)By the time he arrived,the train had already gone. 2)By the time he comes,we will already have left.
Exercises: 1.They walked out of the room ___the meeting was over. 2.They must stay in school ____they are sixteen. 3.Take the medicine ____you go to bed.
VII. until (till) (up to the time that) 1)He will not go to bed until(till) his mother comes home. 2)Until she told me, I had no idea of what they had said. 3)It is not until his mother comes home that he will go to bed.(强调结构） 强调结构） 强调结构 4) Not until his mother comes home will he go to bed.
I.when
1)When he comes here tomorrow,I will call you. (at the time that) 2)Henry is in charge of the office when Mr.Smith is away. (during the time that) 3)He removed the tree when it was the best in the ground. (本该 却) 本该…却 本该 4) Why do you have a walk when you have a car? (在…的情况下 的情况下) 在 的情况下 5) I hadn’t been reading for half an hour when I heard steps outside.(还没 就) 还没…就 还没
1。状语从句的分类 。
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时间---when, while, as, after, before, since, until/till, once, as soon as, the moment, immediately, directly ,instantly, each/every time, by the time 地点---where, anywhere, everywhere 原因---because, since, as, now that, considering that
Language for Chapter Four (SB1)
1.Adverbial Clauses of Time:（时间状语从句） （时间状语从句） when, while, as, before, after, since, until, as soon as, every time, each time, the moment, by the time…
II.while
1)While he was walking in the street, he met Tim. (分词短语） 分词短语） 分词短语 While walking in the street,he met Tim. Walking in the street ,he met Tom. 2)He learned to speak English while he was here. 3)I like tea while she likes coffee. 4) While we don’t agree, we continue to be friends. ( 虽然 虽然)
2.Adverbial Clauses of Reason(原因状语从句）
because, since, as, now that, for
比较：because, since, as和for
1） because语势最强，用来说明人所 不知的原因，回答why提出的问题。当原 因是显而易见的或已为人们所知，就用as 或 since。 I didn‘t go, because I was afraid. Since /As the weather is so bad, we have to delay our journey. 2） 由because引导的从句如果放在句 末，且前面有逗 号，则可以用for来代替。 但如果不是说明直接原因，而是多种情况 加以推断，就只能用for。 He is absent today, because\for he is ill. He must be ill , for he is absent today.
1.Do you support the idea that we should work for a shorter time each day? 2. We should apply both theories in the language study. 3.I’m afraid that this certificate doesn’t qualify you for the job. 4.There are bright prospects for me if I accept the position. 5.There are no vacancies in the office so we can’t offer you a job. 6.Don’t throw that rope( string) away. It may come in handy some day. 7.The product met all requirements set by the government.
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方式---as, as if/as though 比较---than, as…as…/ not so…as ,The…,the...
before 1.I hadn’t waited long______ he came.
2.It’s a long time_______ I met you last. since until 3.I watched him______ he disappeared from sight in the distance. 4.It would be months _______he was fit before for work. After 5._______all we have said, he still won’t change his mind. since 6.It was years______ I had seen her. 7.I shall return Thursday_________ unless something unexpected happens.

As conj 特点:① 特点 ①从句具有延续性 主句事件发生在从的过程中. 一边,一边 ②主句事件发生在从的过程中 一边 一边 ③有时主句用省略 as a child
III. as (一边...一边,随着） 1)As they were picking tea,the girls were singing happily. 2) She sang as she worked. 3) Child as he is, he knows a lot. 4) He flew away as he was a bird. IV. Before 1)It won’t be long before he finishes his writing.
Until conj 1.Wait until the rain has stopped. 2. 否定 瞬间动作 否定+瞬间动作 He didn’t go to bed until his father returned . Not until he spoke did I realize he was a foreigner. It was not until he spoke that I realized he was a foreigner. Unless conj 从句不用 从句不用will\would I shall go there unless it rains tomorrow. He doesn’t do his lessons unless forced to. She hasn’t got any hobbies--- unless you call watching TV a hobby.
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条件---if, unless, suppose/supposing/provided/providing, in case, so(as) long as, on condition that 让步---(al)though, while, whether ,as, even if, even though, no matter …/~ever who, which, what, where, how, ---so that, in order that, in case 目的 结果---so that, so…that, such…that
Before conj
②I must finish the work before I go home. 才 It will be five years before we meet again. It was dark before we knew it. ③rather than He will die before he tells them what they want to know.