2022年中考复习外研版语法复习-1状语从句课件28张

(共28张PPT)
中考语法专题
状语从句
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定义
状语从句是指在句子中用作状语、起副词作用的句子，修饰谓语、非谓语动词、定语、状语或句子。
状语从句 分类
1时间状语从句
9方式状语从句
6结果状语从句
8比较状语从句
7让步状语从句
2地点状语从句
3原因状语从句
4条件状语从句
5目的状语从句
连接词：when, while, as, before, after, until/till,
since, as soon as, by the time
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一、时间状语从句
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连词 用法 例 句
when 1. 意为“当……时”, 从句的动词可用延续性动词，也可用非延续性动词 2. 意为“这时”或“在那时” 1. When I came into the room, he was writing a letter.
2. I was walking along the street when suddenly Tom patted me on the shoulder .
while 1. 意为“当……时”；while引导的动作必须是持续性的 2. 意为“然而” 1.While it was raining, they went out.
2. All of us are working hard while he is sleeping.
as 意为“一边……一边”，引导持续性动作，强调主句和从句的动作同时发生 2. 意为“随着” 1. He hurried home, looking behind as he went.
2. As time goes by, I like China better.
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till until 1. 若主句动词是持续性动作，常用肯定式，表示“直到…为止” 2. 若主句动词是瞬间动词，要用否定式not…until表示“直到……才” 1. We waited till (until) he came back .
2. She didn’t stop working until eleven o’clock .
since 1. 意为“自从……以来”，主句常用现在完成时，从句用一般过去时 2. it’s+时间+since从句 1. Great changes have taken place in China since 1978.
She has taught in this school since she came to this city in 1989.
2. It’s three years since she came to this city.
as soon as 意为“一…就……” As soon as I arrive in Shanghai, I’ll write to you.
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时间状语从句的时态
1. 主句一般将来时，从句用一般现在时 (主将从现) The boy will be a writer when he grows up.
2. 主语含有情态动词，从句用一般现在时(主情从现) When the lights are red, the traffic must stop.
3. 主句为祈使句，从句用一般现在时(主祈从现) Please don’t go to bed before you finish your homework.
4. 主句为一般过去时，从句也用过去时态(主过从过) I liked reading when I was young.
二、原因状语从句
连接词: because, since(因为，既然), as, for
注意:
for连接的并列句分句前常有逗号，其引导的分句不可放于句首。
例：It must have rained last night, for the ground is still wet.
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【注】because不能与so同时使用。
2.遵循“主将从现，主祈从现，主情从现”的原则
1.连接词：if, unless, as long as(只要)
e.g. If I am free, I will call you.
e.g. We shall go there tomorrow unless it rains.
= We shall go there tomorrow if it doesn’t rain.
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三、条件状语从句
e.g. You will succeed as long as you work hard.
连接词：so that, in order that
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四、目的状语从句
E.g. Speak slowly so that/in order that we can understand you.
so that和in order that后常接含can/could, may/might,
shall/should, will/would等情态动词的从句
如果目的状语从句的主语与主句的主语相同，可用in order to 转化为简单句。
E.g. I’ll write down your phone number so that I may not forget.
= I’ll write down your phone number in order not to forget.
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五、结果状语从句
连接词：so that, so… that…, such …that…
连词 用法 例句
so that 意为“因此，所以，结果”，so that前有逗号 We turned up the radio, so that everyone heard the news.
名用such，形、副so，多多少少也用so。
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so…that与such…that的区别
总结: ① so +形容词/副词+that…
so+形+a/an+名(单数)+that…
such+a/an+形+名(单数) +that…
② 用so不用such: so+many/much/few/little+形+名
③ 用such不用so: such+形+不可数名词/可数名词复数
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so…that…引导的结果状语从句可与too…to…或enough…to…构成的简单句转换。
例句：The boy is so young that he can’t go to school.
=The boy is too young to go to school.
=The boy is not old enough to go to school.
转换时too放在所修饰词之前。 too+adj./adv.
enough放在所修饰词之后。 adj./adv.+enough
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It was _______________(如此好的天气) that we decided to go fishing.
All of us feel surprised that such a little boy can eat _____________(如此多的食物).
他以前从没见过如此宏伟的一处自然景观。
4. 孩子们在夏令营里的生活是如此丰富，所以他们都想再次参加。
such good weather
so much food
He has never seen such a wonderful natural wonder before.
The children are having such colorful life in the camp that they all want to join in the camp again.
连接词：than, as...as, not as/so...as, the+比较级…, the +比较级
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六、比较状语从句
注意：as...as, not as/so...as中间用形容词或副词的原级。
例句：1. The earth is bigger than the moon.
2. He writes as carefully as his sister.
3. The more exercise you take, the healthier you will be.
The harder you work, the greater progress you will make.
1.连接词： though, although, even if, even though
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例：Although/Though he is young, he knows a lot.
I’ll go even if/though it rains tomorrow.
七、让步状语从句
【注】although和though可与yet或still连用，但不能与but连用。
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连接词：where, wherever
Where there is water, there is life. 哪里有水，哪里就有生命。
Wherever you go, you must obey the law.无论你到哪里，你都必须遵守法律。
地点状语从句 vs. 定语从句
where引导定语从句时，从句前应有一个表示地点的名词作先行词；状语从句前则无需先行词。
Go back where you came from.(地点状语从句）
你从何处来到何处去。
Go back to the village where you came from.(定语从句，修饰village)
回到你来的那个村子里去。
八、地点状语从句
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九、方式状语从句
连接词：as（正如，像……）, as if, as though（好像）
as if/though从句所表示的情况是事实或有很大可能用陈述语气，是主观想象或与事实相反时用虚拟语气。
例句：It looks as if it is going to rain. (非虚拟语气)
He talked as if he had seen the accident. (虚拟语气)
They don’t know if it _____________(rain) tomorrow. If it ________________(not rain), they’ll go camping.
2. As soon as I get to the airport, I ___________(phone) you to pick me up.
3.While my wife __________(read) the newspaper, I was watching TV.
4. They _____________(not see) each other since 1999.
5. The local guide spoke as _____________(clear) as she could to make the visitors understand her.
will rain
doesn’t rain
will phone
was reading
haven’t seen
clearly
6. 只要我们竭尽全力，父母就会对我们很满意。(as long as)

7.虽然她很忙，她还坚持自学英语。 (keep on doing sth.)

8. 如果Tom考试不及格，他就没有机会上高中了。(have the chance)
9.请打开窗以便我们能有新鲜的空气。(so that)
Our parents will be pleased with us as long as we try our best.
Although she was busy, she kept on learning English
by herself.
Tom won’t have the chance to go to the high school if he fails the exams.
Please open the window so that we can have fresh air.
连词
1.并列连词
表并列关系：and, both…and…, neither…nor（既不……也不……）, not only…but also…
表转折关系：but, yet, however, while（然而）
表选择关系：or, either…or…(不是……就是……;或者……或者……)
表因果关系：for, so
2.从属连词
(1)引导宾语从句：that, if, whether (在句中不做任何成分）
(2)引导状语从句(前面已讲)
就近原则
haven’t seen
arrives
crossing
were having
will rain
doesn’t rain
were singing
passed
was searching
to shake
to read
go
turning
will tell
was cooking
had learned
could hear
would
I have worked at this school since I graduated
from Qingdao University.
When we don’t know how to solve problems, we can ask our teacher for help.
It is convenient for passengers to use the electronic tickets when they take the high-speed railway.
Both parents and children are working hard for the beautiful future.
David is a good student as well as a good singer.
You will not be successful unless you put all your heart into your work.
No matter how difficult it is, Chinese women’ s volleyball will never give up.
When the teacher came in, they were talking about the chemistry experiment.
Please open the window so that we can have the fresh air.
We didn’t go home until we sent the old man to the hospital.
Thanks for your listening!