高考语法专题：状语从句
1.时间状语从句
连词有：when, whenever, while, as, after, before, now that,
(ever) since, till, until, once, as soon as, every time, the first time, the moment, immediately, directly等。
I’ll let you know as soon as it is arranged. Now (that) you mention it, I do remember.
Every time I catch a cold, I have pains in my back. I recognized him the moment he came in. 【注意】
(1)时间状语从句一般不用将来时，而用一般现在时代替；用一般 过去时代替过去将来时。
I’ll go there if time permits. 如果时间允许，我会去的。 (2)可用现在完成时：
I don’t believe you until I have seen it with my eyes. Don’t get off the bus until it has stopped. (3)可省略：
He was reading a magazine while waiting for the bus. When completed, the railway will link many cities. (4)可用分词代替：
After they finished the lecture (Having finished the lecture), they left.
When it is seen from the hill (Seen from the hill), the park is very beautiful. 2.地点状语从句
由where“在……的地方”和wherever“无论在……的地方”引导： Where there is water, there is life.
Trees grow well where there is plenty of sunlight. Where there is a will, there is a way. He will work wherever the people need him. Wherever you go, you must be diligent. 3.原因状语从句
由because, as, since, now that, considering that 等引导： Now that you are all here, let’s try and reach a decision. I do it because I like it. 可用分词、独立结构来代替：
As he is honest (Being honest), he is liked by all his friends. There being no buses, we had to walk home. Being ill, she couldn’t come to school.
Weather being so fine, we have decided to go hunting. 4.目的状语从句
用so that, in order that, for fear that, in case引导,谓语一般用 can, could, may, might, will, would, should等： He started early so that he could catch the train. 可用in order to, so as to 引导的不定式来代替：
He started early in order to (so as to) catch the train. 5.结果状语从句
由so...that, such...that引导：
We left in such a hurry that we forgot to lock the door. He started so early that he caught the train. 比较下列句子：
It is such a good book as everyone likes to read. (句中as引导的是定语从句,as做read的宾语。)
6.条件状语从句
由if, unless, as (so) long as, on condition that 引导。一般不用将 来时，而用一般时代替：
As long as we don’t lose heart, we’ll find a way to overcome the difficulty.
The doctor won’t operate on him unless it is necessary. 【注意】
(1)will用作情态动词，用于条件句中，意为“愿意”。 If you will wait a while, I’ll call the manager. (2)表达条件状语有多种形式。例如： If you work hard, you’ll succeed. 努力学习,你就会成功。 可用下列不同形式表达:
Working hard, you’ll succeed. Work hard and you’ll succeed. (3)条件句的省略：
If heated, water can be changed into vapor.
相当于:If it is heated, water can be changed into vapor. 7.比较状语从句 由than, as引导。
He is not so clever as you. You are taller than I. He is as tall as I. 8.方式状语从句
由as“像……那样”和as if, as though“似乎……”引导。 We must do as the Party tells us. Do as I tell you.
He acted as if (as though) nothing had happened.
9.让步状语从句
由though“尽管”,although“尽管”,even if“即使”,even though“即 使”;疑问词 + ever: however, whatever,...或no matter+疑问词:no matter who,...;while“虽然”,when“尽管”等引导；as“尽管”引导让 步状语从句要倒装。
We’ll try to finish the work in time though we are short of manpower.
No matter what (whatever) you do, don’t touch this switch. Old as he is, he works hard.
Hard as he works, he couldn’t catch up with others. Try as he would, he couldn’t manage it. Girl as she is, she is brave. 高考新剖析
1. It just isn’t fair; I was working as a waiter last month, ____________my friends were lying on the beach. ［2020;2020年高考辽宁卷］ A. whenever B. though while
2. All the dishes in this menu, _________ otherwise stated, will serve two to three people.［2020;2020年高考全国卷Ⅱ］ A. as
B. if C. though D. unless
C. for
D.
3. ____________well prepared you are, you still need a lot of luck in mountain climbing.［2020;2020年高考上海卷］ A. However
B. Whatever D. Although
C. No matter
4. —Are you ready for Spain?
—Yes, I want the girls to experience that____________ they are young.［2020;2020年高考上海卷］
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