高中英语语法课件_状语从句 (共42张PPT)

whether…or…
whether…or…引导的让步状语从句： △ 这种从句也称“选择条件-让步状语从句”，可位于 主句之前或之后，如： 1.Whether you like it or not, you’ll have to do it. 2. We hold that all countries, (whether they are) big or small, (whether they are) rich or poor, should be equal. 3. Whether it rains or snows, I will go tonight. 5. She had to go, whether or not she wanted it.
2) 一些表示时间的名词词组也可引
导时间状语从句。如：the moment, the minute, （一…就）next time （下次）, every/each time （每 次）。 e.g. The moment he comes, I will tell him.
4) as soon as, immediately, directly, instantly 等副词也可引 导状语从句。表示“一…… 就……”。
.
1. I was so familiar with him that I recognized his voice ______ I picked up the phone. A. while B. after C. In case D. the minute 2. How long do you think it will take _______ our product becomes popular with the consumers? A. when B. until C. before D. since
状语从句
What are “ Adverbial Clauses”?
在主从复合句中修饰主语中的 动词、 形容词、副词等的从句叫做 “状语从句”。分类如下：
1. 时间状语从句
2. 地点状语从句
3. 原因状语从句 4. 条件状语从句
状语从句
5. 让步状语从句
6. 目的状语从句
7. 结果状语从句
8. 方式状语从句
1.
4. 条件状语从句
条件状语从句表示主句中的某一 动作或状态是在什么情况或条件下发 生的。条件状语从句中通常用一般现 在时表示将来。 条件状语从句由从属连词引导：if, unless (除非), as / so long as (只要), on condition (只要), in case (假使) , providing / provided (that), supposing （that）（假若，倘使），on condition that(条件是） 等。

whoever, whomever, whatever, whichever

由连接代词whoever, whomever, whatever, whichever引导 的让步状语从句： Whoever (= no matter who) is unwilling to go, I will go. Whomever (= no matter whom) you are dealing with, this method is no good. Whatever (= no matter what) happens, keep calm. Whatever others may say, you are certainly right. Whichever (= no matter which) you choose, we have no objection.
e.g. a. We’ll come over to see you on Saturday if we have time.
b. We should serve the people as / so long as we live.
1. We will be able to get there on time, _____ our car doesn’t break down on the road. A. as soon as B. as far as C. as long as D. as well as 2. In time of serious accidents, _____ we know some basic things about first aid, we can save lives. A. whether B. until C. if D. unless
whatever 或whichever



由连接形容词whatever 或whichever 引导的让步状 语从句，如： Whatever (= no matter what) difficulties may arise, we must and can overcome them one by one. (whatever 既相当于no matter 连接主句与从句， 又相当于疑问形容词what 修饰名词difficulties。) Whichever (= no matter which) room is assigned to him, he will have no objection. Whichever method you use, the result is much the same.
9. 比较状语从句
1. 时间状语从句
1) 常用连词如下：as,
when, while, till / until, not … until, before, since, after等。
e.g. I won’t know where he is until I get a letter from him. Till 只能用 于肯定句中，until既可以用于肯定 句，也可以用于否定句。
Though/although
Though / Although he was old, he worked hard. = He was old but he worked hard. 注意一个典型的中国错误： though / although 切不可与but连用。
as
1.Try as he would, he could not remember a word of it. (= No matter how he would try …) 2. Try as he might, he didn’t pass the exam. 3. Child as he is, he know o lot.
It’s/will
be +一段时间 before+一 般现在时 表示过了多久才 It’s/will （not) be +一段时间 before+一般现在时 表示没过多久 就 it ’s been+一段时间 since +一般过 去时
It
will be a long time before we meet again. It will not be a long time before the China become a developed country. It 20 years since we first each other. has been saw
不可出现在句首。
Jenny was very sad over the loss of the photos she had shot at Canada, ______ this was a memory she especially treasured. A. as B. if C. when D. where 2. Some people believe that ______ oil is running out, the fate of the motor industry is uncertain. A. / B. though C. for D. since
As soon as I reach home, I will tell him the news.



5) a. hardly … when b. scarcely … when / before c. o sooner … than 都相当于as soon as，用以引导时间状语从 句。注意：当 hardly, scarcely及no sooner位 于句首时,从句中的主谓要倒装。 e.g. No sooner had she gone than it happened
5. 让步状语从句
在复合句中表示让步概念的状语从句 被称为让步状语从句。通常由下列词 语引导：though, although, even if, even though, while, no matter who/… , however ，as等。 让步状语从句可以位于主句前、后， 有时插在主句中间。
3. ______ the day went on, the weather got worse. A. With B. since C. As D. While 4. He was halfway through his meal ____ a familiar voice came to his ears. A. why B. where C. when D. while 5. Hardly ______ into the village ______ it began to rain. A. we had got; when B. we got; than C. had we got; when D. did we get; than
while