人教版(2019)选择性必修 第二册Unit 1 Science and Scientists Discover useful structures 课件(共20张PPT)

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名称 人教版(2019)选择性必修 第二册Unit 1 Science and Scientists Discover useful structures 课件(共20张PPT)
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版本资源 人教版(2019)
科目 英语
更新时间 2023-11-25 20:14:06

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(共20张PPT)
选择性必修二 Unit 1 Predicative Clause
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① 理解: 表语从句的结构及意义
② 掌握: 表语从句的连接词及使用规则
③ 运用: 表语从句,去表达自己的想法
Learning Aims
表语用来描述主语是什么,包括主语的身份,特征和状态等。表语接在系动词后面。
在复合句中作表语的从句叫做表语从句。表语从句位于主句的系动词之后,对主语进行解释、说明,使主语的内容具体化。表语从句必须用陈述语序。
Eg: The question is who broke the vase.
主语
系动词
表语从句
Definition of predicative clause
连接词
1. How to judge whether it is a predicative clause
主要依据:系动词后
The problem is difficult.
The problem is that he can not speak English.
Sth
表语从句学什么?
谓语动词
引导词
特殊句式
表状态 表变化 表不变
其他
be,seem, appeal,look, smell,sound, taste,feel become, grow,turn, get,go keep, remain, stay,stand
prove
1.系动词有哪些?
常见系动词
如何判断系动词?
用be动词替换需要检验的动词
如果句法正确,句意无大变,基本判断该动词为连系动词
Her face turned red.
Her face was red.
2. Subordinating conjunction引导词
1. One theory was ______ bad air caused the disease.
2. What people really doubt is __________ the doctor will defeat the serious illness.
3. It seemed _______ the world were coming to an end.
4. Why does this applied science, which saves work and makes life easier, brings us little happiness That is ________ we have not yet learn to make sensible use of it.
that
(在从句中不充当成分)
whether
(在从句中不充当成分, 意为“是否”, 表语从句中不能使用“if”)
as if
(在从句中不充当成分, 意为“好像”)
表语从句中SVO成分完整
表语从句中SVO成分完整
表语从句中SVO成分完整
because
(在从句中不充当成分, 意为“因为”)
表语从句中SP成分完整
1)连词:在从句中不充当成分
as if / as though 意为“_________________”引导的表语从句常置于系动词look, seem, sound,be,become 等后面。
that ____ 意义,在表语从句中 ______ 成分,起______ 作用,________ 省略。

不充当
连接
不能
连接词whether起 _____ 作用,意为“_________________”,在句中也不作任何成分(注意:if ______引导表语从句)。
连接
是否
不能
似乎,好像
because意为“______” 引导表语从句强调原因,注意与why的区别。
因为
1. The problem is __________ could find out a cure for the disease.
2. What I have not decided is ________ I am going to visit.
3. Both my parents have given me some advice on how to save money. But the question is ______ advice I should take.
whose
(在从句中充当定语,意为“谁的...”)
表语从句中缺少定语
表语从句中缺少主语
whom
(在从句中充当宾语, 意为“谁”)
表语从句中缺少宾语
who
(在从句中充当主语, 意为“谁”)
2)连接代词:在从句中充当成分主语、宾语、表语、定语
连接代词 what, which, who, whom, whose 除在句子中起 ______ 作用外,还可在从句中作 _____、_____、_____ 或 ______,且各有词义。
连接
主语
表语
定语
宾语
11. What John Snow showed to the world was ______ cholera could be overcome.
12. The exact places Snow marked on the map were _______ all those who died had lived.
13. What Snow was determined to find out was ________ more than 500 people died in ten days.
14. The next major explosion is going to be ________ genetics and computers come together.
how
where
when
表语从句中SVA成分完整, 缺少原因状语:“为什么...”
3)连接副词:在从句中充当方式、地点、原因、时间状语
表语从句中SV成分完整,缺少方式状语:“如何”
表语从句中SV成分完整, 缺少时间状语:“...的时候”
why
表语从句中SV成分完整,缺少地点状语:“...的地方”
连接副词where, when, why, how除在句中起______ 作用外,在从句中还充当_______、______、______或______状语,本身具有词义。
连接
时间
地点
方式
原因
解题思路
先看句子是否完整
再分析“充当句子什么成分”,结合句意
句子完整 关系副词,从属连词,其它连词 when, where,why, how,that,whether, because, as if/though
句子不完整 关系代词 what, which, who, whose等
This is __________I want.
The problem was ______could do the work.
The village is _________ I used to spend my holiday.
That is ___________ we never thought of it.
The trouble is __________ we are short of funds.
My problem is __________ coat is suitable for me.
I ’d like to start my own business—that’s ________ I want to do if I had the money.
What I want to know is _______will support me.
what
where
who
because
that
which
what
who
Practice
9. There was an accident. That’s ______he was late for class.
10.What concerns me most is ______will be my teacher next term.
11.The trouble is _______I have lost his address.
12.The question is __________the film is worth seeing.
13.That’s ________I object to the plan
why
Practice
who
that
whether
why
Matters need attention:需要注意的事项
3.特殊句式
1. 表语从句的【特殊句式】
The reason why.... is that.... “...的原因是...”
The reason is that... “原因是...”
The reason ________ I like English is ________ it brings me happiness.
The reason is ________ English brings me joy.
2. This /That/ It is because.... “这/那是因为...”
This / That / It is why... “这/那就是...的原因。”
because引导表语从句,从句表原因。
why引导表语从句,从句表结果。
I like English. That is ________ it brings me joy.
English brings me joy. That is _______ I like it.
because
why
1.He is careless and irresponsible. That was _______ he was
fired.
2.He was fired. That was _________ he is careless and
irresponsible.
3. The reason _______ he was fired was ________ he was
careless and irresponsible.
why
because
why
that
即学即练
Attention2: 表语从句中的虚拟语气
My proposal is that we (should) start early tomorrow.
My advice is that we (should) get there by train.
My suggestion is that we (should) go and help him.
1)主语是表示___________________等的名词时,表语从句中谓语动词用“should + 动词原形”,should可省略
建议、命令、要求
Darks clouds are gathering. It seems as if it is going to rain.
I feel as if my heart were burning.
He felt as if he had met this young lady before somewhere.
I am cleaning the house. It looks as if my girlfriend would come tomorrow.
2)as if/as though 引导的表语从句
语气:若表示真实情况,用正常的陈述语气。
若表示非真实情况,用虚拟语气。
若跟现在事实不符:过去式(be动词用were)
若跟过去事实不符:had done
若跟将来事实不符:would/could/might+动词原形
一坚持 insistence
二命令 order, command
三建议 advice, suggestion, proposal, recommendation
四要求 requirement, request, demand, desire
Thank You !