3. When 还以引导条件状语从句相 当于if
How can I explain it to you when / if you won‘t listen.
When you read it again, the meaning will become clearer to you.
While 的用法 1. 必须引导持续性动作，强调在一段时 间内，主句和从句动作同时发生。 My mother was cooking while I was doing my homework. Please don‘t talk so loud while others are working.
时间状语从句
普 通 连 词
before after as soon as
when
while
till/until
since every/each time immediately next time any time by the time the first time directly instantly
7. (04年江苏) ______ I accept that he is not perfect, I do actually A like the person. A. While B. Since C. Before D. Unless
C a 8. (06辽宁) He was about halfway through his meal ______ familiar voice came to his ears. A. why B. where C. when D. while
问题2: 6. (06天津) The cost of living in Glasgow is among the lowest in Britain, ______ D the quality of life is probably one of the highest. A. since B. when C. as D. while
till, until和not…until：
1.主句是肯定句时，主句的动词必是延续性动词，表示“主 句动作或状态一直持续到从句动词发生才停止”。从句 引导词是 till/until都行。如： We waited until/till he came. 2．主句是否定句时，主句谓语动词是非延续性动词，表示 “主句动作直到从句动词发生才开始”，从句引导词通 常用until。如： He won‘t go to bed until she returns. 3．till不可以置于句首，而until可以。如： Until you told me I had no idea of it. 4．not…until句型中的强调和倒装说法： Not until you told me did I have any idea of it. 倒装 It was not until you told me that I had any idea of it.
9.Adverb Clauses of Manner
(方式状语从句 )
4. 位置 ： 主前从后亲密没够， 从前主后得有小逗， 从在主中需俩逗逗。
I was reading a book when he came in. When he came in, I was reading a book. I was, when he came in, reading a book.
(原因状语从句） (地点状语从句） (目的状语从句） （结果状语从句）
3.Adverbial Clauses of Conditions (条件状语从句）
7.Adverbial Clauses of Comparison（比较状语从句） 8.Adverbial Clauses of Concession (让步状语从句）
4. 引导条件状语从句 “只要” While we are here, don‘t worry.
As 的引导时间状语从句的用法
1. “随着” 2. “一边…一边…‖ 3. ―当…‖ 强调动作同时发生，无先后
1. As I get older, I get more optimistic. 随着年龄的增长，我变得更加乐观。 2. He hurried home, looking behind as he went. 他匆匆忙忙回家，边走边往后看。 . 3. As he was going out, it began to rain. 当他出去时开始下雨了。
The film had been on when we arrived.
2. be about to do … when … be doing … when… be on one‘s way … when … be on the point of doing … when… had just done … when… 以上句式中的“when‖译为“这时或那时”不 可以用其它连词替换。 The telephone was ringing when I got home. I was about to go to bed when he came back.
2. ―然而” 表示对比。 I like watching TV while he likes reading. 3. 引his good points, I can see his shortcomings.
尽管我承认他的优点，但我还是看到了他的缺点。
状语从句
Adverbial Clauses
1. 什么是状语： 在句中用来修饰动词、形容词、副词 的成分被称为状语。如： He works very hard. He is real handsome.
really
2.什么是状语从句： 用作状语的句子被称为状语从句。
3.Different Kinds of Adverbial Clauses:
Before 的多种翻译方式：
1. 在…之前
2.在It +be+短时间+before句型中
主句是肯定句式时：“ （多久之后）才… ‖
主句是否定句式时： “（过不了多久）就…‖
3. ―还没来得及，就…‖ 4. “趁……‖
1. Before they got to the bus stop, the bus had gone. 在..之前 2. It will be 5 years before he returns to his motherland. 多久之后才… 3. We waited a long time before he came out.
1.Adverbial Clauses of Time:
2.Adverbial Clauses of Reason 4.Adverbial Clauses of Place 5.Adverbial Clauses of Purpose 6.Adverbial Clauses of Result
（时间状语从句）
We were just __ calling him up __ he came in.
A.
B. C.
about ; when
on the point of ; while on the point of ; when
D. on the point of ; as
I was walking down the street while I heard when someone calling for help.
问题1:
A suddenly the 1. (04北京春) We were swimming in the lake ______ storm started. A. when B. while C. until D. before 2. (02上海) He was about to tell me the secret ______ D someone patted him on the shoulder. A. as B. until C. while D. when 3. (05上海) He transplanted the little tree to the garden ______ B it was the best time for it. A. where B. when C. that D. until 4. (05福建) －Did Jack come back early last night? －Yes. It was not yet eight o‘clock ____ B he arrived home. A. Before B. when C. that D. until （注：句型：It is/was + 点时间+when从句）
as
the moment
特
殊
连 词
the minute
the second the instant
When 的用法
1. When 即可以引导一个持续性动作，又可引到一 个短暂行动作。可用以表示主从句动作同时发生 或从句动作先于主句。 (从句动词可延续也可非延续) I was thin when I was a child.
• 连接词when, while, as的用法区别： 1．while引导的时间状语从句的谓语动词必须是可延续的， 而when引导的时间状语从句的谓语动词是可延续的，也 可以是非延续的动词。如： When/While he was eating his breakfast, he heard the doorbell ring. When I stopped my car, a man came up to me. 2．从句动作发生在主句动作之前时，只能用when引导这个 从句，不可用as或while。 如： When you have finished your work, you may have a rest. 3．表示“随着…,一边…一边”，连词用as. 如： As the election approached, the violence got worse. 4．如果主句谓动是非延续性的，而从句谓动是延续性动词并使用进 行时态时，when, while与as 可互换使用。 如：When/While/As I was walking down the street, I came across an old friend of mine.