考点1：引导时间状语从句的从属连词
when ,as, while, after, before, since, once, until, till, as soon as, every time/ each time, the moment, the minute, immediately, directly, instantly等。
1. be doing…when…,be about to do…when…常表示“正在……突然……”或 “正要……这时……”
如：I was about to fall asleep when my sister came in.
I was walking along the street , when I met him.
2. while 引导的从句的谓语动词必须是延续性的，并强调主句和从句的动作同时发生（或者相呼应），此外，while有时还可以表示对比。
如：
We are cleaning the classroom while they are playing the football.
3.The moment --- 一……就…… =as soon as , immediately,
如：
---Did you remember to give Mary the money you owed her?
---Yes, I gave her the moment I saw her.
No sooner than --- 一……就……=hardly… when
如：
No sooner had he arrived than he went away again.
4.since，从句的谓语动词一般是短暂性动词,主句谓语动词则是延续性动词或反复发生的动作。since引导的从句时态为一般过去时,主句时态为现在完成时或现在完成进行时。
如：
She has been working for the company since she left school.她自从毕
业一直在这家公司工作。
Note:
句型“It is/has been+时间段+since...”意为“自从……到现在多久了”。
It is a long time since I saw you last time.
=I have not seen you for a long time.
我很久没见过你了。
It has been two years since I was admitted to this key middle school.
=I was admitted to this key middle school two years ago.
自从我被这所重点中学录取已经两年了。
5.before.常用于表示“还未……就……,不到……就……;……才……;趁……;还没来得及……就……”等含义。
如：
We had sailed four days and four nights before we saw land.
我们航行了四天四夜才看见陆地。
He rushed out of the room before I could say anything else.
我还没来得及说别的他就冲出了房间。
Please write it down before you forget it.
趁你现在没忘把它记下来。
Note:
句型“It was/will be+时间段+before...”意为“过了/要过多久 才……”。“
It was not long before.../ It won’t be long before...”意为“不久就……”。
如：
It will be half a year before I come back.
要过半年我才能回来。
It was not long before he sensed the danger of the position.
没过多久他就感觉到这个位置的危险。
6.every time,each time,next time,the first time 等名词短语用来引导时间状语从句,示“每当,每次,下次,第一次”等。
如：
Every time I saw him,I found him to be taller.
每次我碰见他,都觉得他长高了。
考点2：引导地点状语从句的从属连词
where , wherever,等。Where --- 在……地方，Wherever --- 无论哪里
如：
Put the medicine where you can easily get it.
Where there is a will, there is a way.
He follows her wherever she goes.
状语从句在句首时常兼有抽象条件意味。
如：
Where there’s a will,there’s a way.
有志者,事竟成。
Where(ver) there’s plenty of sun and rain,the fields are green.
哪里阳光雨水充足,哪里的田野就绿油油的。
Note:
where引导地点状语从句直接修饰动词,而在定语从句中where作为关系副词要跟在表示地点的先行词后面。
如:
如果你到风俗习惯不同的地方旅游,请入乡随俗。
If you are travelling where the customs are really foreign to your own,please do as the Romans do.(地点状语从句)
If you are travelling in places where the customs are really foreign to your own,please do as the Romans do.(定语从句)
考点3：引导原因状语从句的从属连词
because, since, as, now that, in that, for等。
1.Because --- 因为
如：Mr Smith was very upset because he couldn’t find his luggage.
2.As --- 因为, 通常放在句首
如：As he is honest and modest, all his friends like him.
3.Since ---语气较弱, 常译为既然
如：Since the purser didn’t tell us what to do, we can relax.
4.Now that --- 既然
如：Now that you are here, you can join us.
5.For ---语气最弱，不放句首，表补充说明
如：It must have rained yesterday，for the ground was wet.
考点4：引导让步状语从句的从属连词
although, though, even if, even though, as, whether…or, whatever, whoever, however, whenever,no matter what/who/how/whend等
1.Although, though ---虽然；although 常放在句首。though可以用于倒装。
如：
Although it was raining, the plane managed to take off.
Child though he was, he did quite well.
2.As --- 尽管；as 引导让步状语从句时，句子通常倒装。可与though 互换。
如：
Busy as he is, he never misses a football match.
3.Even if /even though ---即使
如：
Even if you don’t like your boss, you should do your work.
4.However --- 不论， however 引导让步状语从句时，句子通常倒装。
如：He couldn’t get there on time however fast he drove.
5.No matter (what, when, where, how) ---无论（什么，何时，何地，怎样）
如：
The old man wouldn’t believe anything no matter what you said.
6.While ---尽管
如：
While I have sympathy for you, I can’t help you.
7.Whether ---不管，常与or not 连用
如：
Whether his idea is practical or not, we plans to adopt it.
考点5：引导条件状语从句的从属连词
if, unless, as long as, so long as, on condition that, suppose, supposing等。
1.If --- 如果
如：
If you don’t hurry up, you will miss the plane.
2.Unless ---除非=if not
如：
We can’t get there on time unless we book the earliest flight
3.As long as --- 只要
如：
We will succeed as long as we keep on trying.
4.In case --- 假使, 如果
如：
The plane cannot take off in case it rains.
5.Provided that 如果,有时省略 that
如：
The plane will be in good condition provided that it is taken care of carefully.
6.On condition that --- 条件是…
如：
He said that he would come to the meeting on condition that no one asked him to speak.
考点6：引导结果状语从句的从属连词
so that , so… that…, such…that…等。
1.So… that --- 太……以至于， so 后面应用形容词或副词
如：
The flight scheduled so early that nobody wanted to look on it.
2. Such …that… ---太……以至于, 用法与so…that相同，但such 后面应用名词。
如：
The foreign visitor was such a fast speaker that nobody could understand him.
考点7：引导目的状语从句的从属连词
so that, in order that, for fear that, in case等。
1.(So) that --- 以便, 从句中常常使用一些情态动词如：can, could, may, might, should等 、
如：
Let’s take the front seats (so) that we may see more clearly.
2.in order that --- 为了, 与so that相同,从句中常常使用一些情态动词，如：can, could, may, might, should等 。
如：
School was closed early in order that the children might go home ahead of the storm.
3.for fear that --- 生怕; 为了防止
如：
He took the name down for fear that he should forget it.
4.in case --- 万一
如：Better take more clothes in case the weather is cold.
考点8：引导比较状语从句的从属连词
as…as, not as…as, not so…as, …than等。
1.As…as… --- 像……一样
如：
If you don’t want to miss the flight, you need to be at the airport as early as possible.
2.Not so (as)… as… --- 不像……
如：
The job is not so difficult as I thought it would be.
考点9：引导方式状语从句的从属连词
(just )as, as if , as though等。
1.as ---与…… 一样
如：
Do in Rome as the Romans do.
2.as if, as though --- 仿佛, 由as if或 as though引导的从句中可用虚拟语气
如：
She stood at the door as if (=as though) she were waiting for someone.
Note:关键：记清引导词的含义，理清主从句的逻辑关系!!!
练一练吧
1._______John was watching TV, his wife was cooking.
A. As B. As soon as C. While D. Till
2. Peter was so excited_______he received an invitation from his friend to visit Chongqing.
A.where B. that C. why D. when
3.–Did you return Fred’s call?
-I didn’t need to______ I’ll see him tomorrow.
A. though B. unless C. when D. because
4.________you have come, you must not go away so soon.
A.For B. Now that C. Because D. So that
5.She showed us the whole dance first, then broke it down______we could learn it more easily.
A.unless B. so that C. even though D. until
6.He was about to go to bed_______ he heard a strange noise.
A.while B. as C. before D. when
7.No sooner had I arrived home_______it began to rain.
A.when B. while C. as D. than
8.Pop music is such an important part of society_______it has even influenced our language.
A.as B. that C. which D. where
9.-Don’t you know the school will provide us with everything, from bed sheets to drinking cups?
-Yes. I bring this basin _______I need it.
A. for fear of B. in case C. as long as D. so that
10. Unsatisfied______with the payment, he took the job just to get some work experience.
A. though was he B. though he was C. he was though D. was he though
11. He had his camera ready_______he saw something that would make a good picture.
A. even if B. if only C. in case D. so that
12._______all of them are strong candidates, only one will be chosen for the post.
A. Since B. While C. If D. As
答案：CDDBB DDBBB CB
