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2024-2025 学年八年级英语下学期单元语法精讲精练（人教版）
06 状语从句
语法聚焦
1. 状语从句的概念和状语从句的常见类型
2. unless，as soon as和so…that…的用法
3. 状语从句的时态——“主将从现”
语法精讲
1.状语从句的概念和状语从句的常见类型
（1）状语从句是指在复合句中充当状语成分的句子。状语从句可以修饰谓语、非谓语动词、
定语、状语或整个句子。状语从句根据其作用，可分为时间、地点、原因、条件、目的、让
步、
方式、比较、结果等类型。
【注意】状语从句的演变(以时间状语从句为例，其他从句类似)：
★ I reached the hotel at five yesterday afternoon.
主语 谓语 宾语 时间状语
(这是简单句，词组at five yesterday afternoon作时间状语)
★I reached the hotel when it was a little dark yesterday.
主语 谓语 宾语 时间状语从句
(句子when it was a little dark yesterday作时间状语，整个大句子就是含有时间状语从句的复合句)
（2）状语从句的常见类型
类 型 从属连词 举 例
when,while,after,before,as, When I grow up,I will join the army.等我长大后，
时间状语从句 since,till/until,as soon as 我要去参军。
You can go where you want to go.你可以去你想去
地点状语从句 where,wherever
的地方。
Because he didn't work hard,he failed the exam.因
原因状语从句 because,since,as 为他不努力学习，所以考试没有及格。
We will stay at home if it rains tomorrow.如果明天
条件状语从句 if,unless
下雨，我们就会待在家里。
He hid his storybook so that his teachercouldn't find
目的状语从句 so,so that,in order that
it.为了不让老师发现，他藏起了他的故事书。
though,even though,
Although/Though/Even though it was dark,he
让步状语从句
went on working.虽然天黑了，他仍继续工作。
although
You must try to hold the tool as I do.你必须试着
方式状语从句 as
像我这样拿工具。
The youth of today are better than we used to be.现
比较状语从句 as(so)...as,than 在的年轻人比我们过去的境况要好。
She was so tired that she couldn't clean the room.
结果状语从句 so ...that...,such ...that ... 她是如此疲惫，以至于不能打扫房间了。
2.unless，as soon as和so…that…的用法：
（1） unless引导条件状语从句
unless = if „ not ―除非，若不
They will go tomorrow unless it rains.
= They will go tomorrow if it doesn’t rains.
（2）as soon as引导时间状语从句。 ―„„就
He will come and see you as soon as he can.
（3） so.......that引导结果状语从句
句型1：主语+谓语+so+形容词/副词+that从句The wind was so strong that we could hardly move forward.
句型2： so +形容词 + a/an + 单数名词 + that从句
It was so hot a day that they all went swimming.
句型3. so + many/ few + 复数名词 + that从句
He has so few friends that he often feels lonely.
句型4： so +much/ little + 不可数名词 + that 从句
I had so little money that I couldn’t buy a pen.
状语从句的时态——“主将从现”
主 句 从 句 举 例
When your father returns,he will bring some gifts for
主将(主句用一般将来时)
you.等你爸爸回来时，他会给你带些礼物的。
当主句符合左
栏三种情况中
We should obey the rules when we are in public places.
主情(主句含有情态动词) 任意一种时，
在公众场所时，我们应该遵守规则。
从句常用一般
现在时
Don't laugh at others even though you think you are the
主祈(主句是祈使句)
best.即使你觉得自己是最棒的，也不要嘲笑别人。
语法专练
一、单项选择题。
1．— Nancy __________us a report as soon as she __________tomorrow.
— How great! I will be there.
A．gives, is arriving B．gives, will arrive
C．will give, arrives D．gives, arrives
2．I think you'll miss the train ________ you hurry up.A．if B．and C．unless D．when
3．—Must we leave the library before 6 o’clock?
—No, it opens all day on weekends. You can stay there ________ you want to leave.
A．if B．unless
C．since D．until
4．Students may forget what they learn quickly________they use it more often.
A．if B．unless
C．although D．because
5．Sarah called 120 ________ she saw the old man lying on the street.
A．as soon as B．as long as
C．so that D．even if
6．Everyone should do something to protect our earth ________ we can have a better world to live in.
A．as long as B．as soon as
C．even though D．so that
7．The trip in Beijing is ________ wonderful ________ I would like to visit it again some day.
A．such; that B．too; to
C．so; that D．enough; to
8．Jack ________ us to play basketball as soon as he ________ his homework.
A．joins; finishes
B．will join; finishes
C．joins; will finish
D．will join; will finish
9．You will not improve your skills ________ you practice the violin over and over again.A．since B．unless
C．if D．until
10．—Hello, is that Molly speaking?
—No. She’s not at home. I’ll tell her to call you back ________ she comes back.
A．so that B．as long as
C．as soon as D．even though
11．Lisa is ________ a nice girl ________ we all want to help her.
A．such; that B．too; to C．so; that D．very; that
12．In summer, food will go bad quickly ________ we put it into a fridge.
A．if B．unless C．as soon as D．while
13．She was ________ excited at the news that she couldn’t say a word.
A．very B．such C．so
14．I will call you he comes.
A．as soon as B．as C．because D．so
15．The poor woman is very worried——_________ little food for ______ many children.
A．Such; so B．So; so C．Such; such D．So; Such
16．The clever boy called 120 ____________ his mother fell down in the kitchen.
A．although B．as soon as C．as long as D．until
17．The young men all shouted “Happy New Year” ________ it was twelve o’clock.
A．after B．as soon as C．if D．though
18．She says that she'll have to close the restaurant ______ business improves.
A．if B．after C．unless D．when
19．It was the middle of the night ________ the noise woke me up.A．because B．if C．when D．although
20．---I’m afraid e-books might be bad for our eyes.
---Hmm, but they will be helpful for us_________we put them to good use.
A．as soon as B．as long as C．even though D．so that
21．She was tired she fell asleep at her desk.
A．so; to B．such; that C．so; that D．too; to
22．The boy didn’t go to bed his mother came back.
A．but B．until C．while D．as soon as
二、完成句子
1．The box is too heavy for me to carry. (改为同义句)
The box is heavy I can’t carry it.
2．The girl got such a beautiful dress that she wore it all day. (改为同义句)
The girl got beautiful a dress she wore it all day.
3．She will go to the party if she is not busy. (改为同义句)
She will go to the party she busy.
4．He finished his homework. He handed his homework in at once. (合并为一句)
He handed his homework in he finished it.
5．Zhang Lili was so brave that she saved her students. (改为同义句)
Zhang Lili was to save her students.
6．The movie is so exciting that all of us want to see it again. (改为同义句)
It is movie that all of us want to see it again.
7．He is too weak to carry the chair. (改为同义句)He’s he can’t carry the chair.
8．She will go to the party if she is free. (改为同义句)
She won’t go to the party she free.
9．He finished his homework. He handed his homework in at once. (改为同义句)
He handed his homework in he finished it.
10．How do you like the movie? (改为同义句)
do you the movie?
11．Lucy will go to the party if she is free. (同义句转换)
Lucy won’t go to the party she free.
12．The film is so exciting that all of us want to see it again. (同义句转换)
It is film that all of us want to see it again.
13．The little boy is too weak to carry the chair. (同义句转换)
The little boy is he can’t carry the chair.
14．Peter finished his homework. He handed his homework in at once. (同义句转换)
Peter handed his homework in he finished it.
15．The woman teacher was so brave that she saved her students. (同义句转换)
The woman teacher was to save her students.
16．The box is too heavy for me to carry. (改为同义句)
The box is heavy I can’t carry it.
17．You won’t catch the bus if you don’t get up early. (改为同义句)
You won’t catch the bus you up early.
18．It took us two hours to reach the top of the mountain. (改为同义句)
We two hours the top of the mountain.19．The girl got such a beautiful dress that she wore it all day. (改为同义句)
The girl got beautiful a dress she wore it all day.
三、选词填空
用if, unless, as soon as 或so/such..that填空。
1．The animals were lovely I spent a whole day in the zoo.
2． it is cold tomorrow, he will stay at home and watch TV.
3．I sent some flowers to her she finished speaking on the stage (舞台).
4．It was an interesting story everyone enjoyed reading it.
5．I won’t let you in you get here on time.
6． the prince saw her, he fell in love with her.
7．The prince knew that the girl’s foot could fit the shoe, it was not the right girl.
8． it is cold tomorrow, he will stay at home and watch TV.
9．The new couple were happy they couldn’t stop smiling when they got
married.
10．It was an interesting story everyone fell in love with it.
11．He rushed home he got the good news.
四、根据短文内容，用as soon as, unless或so ... that填空。
1 I got home today, my good friend Mike called me. He said he was 2
busy these days 3 he had no time to visit me. Because of this he felt very sorry. On the
phone Mike also said he would have a party this weekend. He knew 4 he invited me, I
would not go to the party. But my mother asked me to look after my sister Rita. My mother isn’t home
now. She went to work. 5 she comes home from work, I’ll tell her the news. 6
someone can take care of my sister, I won’t go to the party because she is 7 young
8 she can’t look after herself.链接中考
阅读短文，用方框中所给单词或短语填空，使短文完整、正确。
although； as soon as； unless； so； before
In ancient times, there was an old man who lived on planting rice. He thought his crops (庄稼)
grew more slowly than those of others. This caused him 1 worried and nervous that he
decided to help the crops grow taller by pulling them up. 2 he felt tired after doing so much
work all day, he went home happily. The man told his son what he did on the farm 3 he
arrived home. His son felt strange and surprised so he went to the farm as quickly as possible. Finally,
his son found all the crops were dead.
I believe everyone thinks the old man is silly. As we all know, plants won’t grow well 4
they develop in their own rules of growth. It is also the same for the development of other things. 5
we get a good result, try to be patient (有耐心的) and follow the rules of things. In this way, you can
probably get what you want.
