人教版（2019） 必修第一册 Unit5 Languages around the world 语法精讲课件（23张PPT）
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| 名称 | 人教版（2019） 必修第一册 Unit5 Languages around the world 语法精讲课件（23张PPT） |  | |
| 格式 | pptx | ||
| 文件大小 | 5.8MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 人教版（2019） | ||
| 科目 | 英语 | ||
| 更新时间 | 2023-03-09 15:13:17 | ||
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(共23张PPT)
as引导原因状语从句
教材原句： As China plays a greater role in global affairs, an increasing number of international students are beginning to appreciate China’ s culture and history through this amazing language.
句型分析：本句为复合句。句中含有as引导的原因状语从句。
翻译：随着中国在全球事务中扮演着更为重要的角色，越来越多的国际学生开始通过这门令人惊叹的语言了解和欣赏中国文化和历史。
原因状语从句
由于
as引导原因状语从句
概述：as引导原因状语从句，表示“因为，由于”，相当于 since，常用来表示已为人们所知或显而易见的原因或理由。
E.g. As it has rained, the air is cooler.
因为下过雨，所以空气比较凉爽。
同义辨析
常用在书面语中，表示多为对方已知的或稍加分析便可得知的原因。
since
because
语气最强，表示一种直接的原因，常用于回答疑问词why引导的疑问句。
E.g. Since you are so sure of it, he’ ll believe you.
E.g. He will succeed because he is careful.
归纳拓展：as引导其它从句
典例分析
As children get older, they become more and more interested in the things around them.
随着年龄的增长，孩子们对周围的事物越来越感兴趣。
(1) 引导时间状语从句，意为“当…时；随着”。
典例分析
You must do everything as I do.
你必须要照我做事的样子去做所有事。
(2)引导方式状语从句，意为“照……方式”。
典例分析
I don't speak English so/as well as he( speaks English).
我讲英语没有他讲得那么好。
(3)引导比较状语从句。多用于在as…as…或 not so/as...as...中，前一个as是副词，后一个as是连词。
典例分析
1. Child as he was, he knew what was the right thing to do.
2. Try as he might, he failed in the exam.
(4)引导让步状语从句。as引导的让步状语从句必须用倒装的形式，倒装时将表语、状语或谓语动词提前。
单数可数名词做表语时要省略冠词
典例分析
As we expected, he succeeded in passing the exam.
正如我们所预料的那样，他成功通过了考试。
(5) as用作关系代词引导定语从句，意为“正如，如同……”。
1. 由于支持的很少，罢工未获成功。
___________________________, the strike was not successful .
2. 众所周知，中国发生了巨大的变化。
__________________，great changes have taken place in China.
3. 尽管他学习很努力，但几乎没取得什么进步。
________________ ， he makes little progress. .
用“as引导的从句” 完成句子。
考点追击
As there was very little support
As is well known
Hard as he works
Sum up： as引导原因状语从句
1
2
基本用法
拓展
状语从句的省略
教材原句： Add a preposition where necessary.
句型分析：本句为复合句。主句为祈使句，从句为状语从句的省略形式。
翻译：在需要的地方加一个介词。
where (it is) necessary
状语从句的省略
概述：状语从句主谓成分的省略是英语语言在使用过程中出现的一种较普遍的现象，它能使语言言简意赅。
典例分析
1. Although working very hard, he failed in the final exam.
(Although he worked very hard,…)
2. After taking the medicine, she felt much better.
(After she took the medicine,…)
(1)当从句的主语与主句的主语一致时，从句可以省略主语，从句的谓语动词采用其v-ing结构。
典例分析
1、连词+形容词/名词/介词短语
Whenever (she is) free, she often goes shopping.
While (he was) a young boy, he was always ready to help others.
She looked anxious as though (she was) in trouble.
(2)当从句的主语和主句的主语一致时，若从句的谓语动词是系动词，此时从句的主语和be动词通常可以一同省略。
典例分析
2、连词+现在分词/过去分词/不定式
While (she was) walking along the river bank, she was singing a pop song.
If (it is) well read, the book will give you much to think.
He stood up as if (he were) to say something.
(2)当从句的主语和主句的主语一致时，若从句的谓语动词是系动词，此时从句的主语和be动词通常可以一同省略。
典例分析
(3)当从句的主语是it, 且谓语动词是be或包含be的某种形式时, it和be常可同时省略。
If (it is) possible, he will help you out of the difficulty.
如果可能的话,他会帮你摆脱困境。
He won't go there with us unless _____________ (invite).
Although ________________ (fright), he managed to ran away.
Granny told the children not to talk while _______________ (eat).
He wouldn't solve the problem even if _____________ (take) charge.
语法填空。
考点追击
invited
frightened
eating
to take
Sum up： 状语从句的省略
1
2
3
从句的主语与主句的主语一致
从句的主语和主句的主语一致，若从句的谓语动词是系动词时
从句的主语是it, 且谓语动词是be
Bye-bye!
as引导原因状语从句
教材原句： As China plays a greater role in global affairs, an increasing number of international students are beginning to appreciate China’ s culture and history through this amazing language.
句型分析：本句为复合句。句中含有as引导的原因状语从句。
翻译：随着中国在全球事务中扮演着更为重要的角色，越来越多的国际学生开始通过这门令人惊叹的语言了解和欣赏中国文化和历史。
原因状语从句
由于
as引导原因状语从句
概述：as引导原因状语从句，表示“因为，由于”，相当于 since，常用来表示已为人们所知或显而易见的原因或理由。
E.g. As it has rained, the air is cooler.
因为下过雨，所以空气比较凉爽。
同义辨析
常用在书面语中，表示多为对方已知的或稍加分析便可得知的原因。
since
because
语气最强，表示一种直接的原因，常用于回答疑问词why引导的疑问句。
E.g. Since you are so sure of it, he’ ll believe you.
E.g. He will succeed because he is careful.
归纳拓展：as引导其它从句
典例分析
As children get older, they become more and more interested in the things around them.
随着年龄的增长，孩子们对周围的事物越来越感兴趣。
(1) 引导时间状语从句，意为“当…时；随着”。
典例分析
You must do everything as I do.
你必须要照我做事的样子去做所有事。
(2)引导方式状语从句，意为“照……方式”。
典例分析
I don't speak English so/as well as he( speaks English).
我讲英语没有他讲得那么好。
(3)引导比较状语从句。多用于在as…as…或 not so/as...as...中，前一个as是副词，后一个as是连词。
典例分析
1. Child as he was, he knew what was the right thing to do.
2. Try as he might, he failed in the exam.
(4)引导让步状语从句。as引导的让步状语从句必须用倒装的形式，倒装时将表语、状语或谓语动词提前。
单数可数名词做表语时要省略冠词
典例分析
As we expected, he succeeded in passing the exam.
正如我们所预料的那样，他成功通过了考试。
(5) as用作关系代词引导定语从句，意为“正如，如同……”。
1. 由于支持的很少，罢工未获成功。
___________________________, the strike was not successful .
2. 众所周知，中国发生了巨大的变化。
__________________，great changes have taken place in China.
3. 尽管他学习很努力，但几乎没取得什么进步。
________________ ， he makes little progress. .
用“as引导的从句” 完成句子。
考点追击
As there was very little support
As is well known
Hard as he works
Sum up： as引导原因状语从句
1
2
基本用法
拓展
状语从句的省略
教材原句： Add a preposition where necessary.
句型分析：本句为复合句。主句为祈使句，从句为状语从句的省略形式。
翻译：在需要的地方加一个介词。
where (it is) necessary
状语从句的省略
概述：状语从句主谓成分的省略是英语语言在使用过程中出现的一种较普遍的现象，它能使语言言简意赅。
典例分析
1. Although working very hard, he failed in the final exam.
(Although he worked very hard,…)
2. After taking the medicine, she felt much better.
(After she took the medicine,…)
(1)当从句的主语与主句的主语一致时，从句可以省略主语，从句的谓语动词采用其v-ing结构。
典例分析
1、连词+形容词/名词/介词短语
Whenever (she is) free, she often goes shopping.
While (he was) a young boy, he was always ready to help others.
She looked anxious as though (she was) in trouble.
(2)当从句的主语和主句的主语一致时，若从句的谓语动词是系动词，此时从句的主语和be动词通常可以一同省略。
典例分析
2、连词+现在分词/过去分词/不定式
While (she was) walking along the river bank, she was singing a pop song.
If (it is) well read, the book will give you much to think.
He stood up as if (he were) to say something.
(2)当从句的主语和主句的主语一致时，若从句的谓语动词是系动词，此时从句的主语和be动词通常可以一同省略。
典例分析
(3)当从句的主语是it, 且谓语动词是be或包含be的某种形式时, it和be常可同时省略。
If (it is) possible, he will help you out of the difficulty.
如果可能的话,他会帮你摆脱困境。
He won't go there with us unless _____________ (invite).
Although ________________ (fright), he managed to ran away.
Granny told the children not to talk while _______________ (eat).
He wouldn't solve the problem even if _____________ (take) charge.
语法填空。
考点追击
invited
frightened
eating
to take
Sum up： 状语从句的省略
1
2
3
从句的主语与主句的主语一致
从句的主语和主句的主语一致，若从句的谓语动词是系动词时
从句的主语是it, 且谓语动词是be
Bye-bye!