人教版（2019）选择性必修第二册Unit 1 Science and Scientists Discover Useful Structures 表语从句课件(共23张PPT)

(共23张PPT)
Noun Clauses
Predicative Clauses
The outdoor activity seems attractive.
The boy remains puzzled.
This is a diligent student.
His job is to teach chemistry.
状态类：be
感官类：feel/look/sound/taste/smell
持续类：stand/remain/keep/stay
变化类：become/get/grow/turn/go/come/run/fall
似乎类：seem/appear
结果类：prove/turn out
是...
可以接表语从句系动词有：
......起来
保持...
变得...
似乎、好像...
结果是...;证明是...
可以接表语从句系动词有：
predicative
表语是用来说明主语的身份、性质、品性、特征和状态。
The outdoor activity seems attractive.
The boy remains puzzled.
This is a diligent student.
His job is to teach chemistry.
What do the sentences have in common in their structures
Conducting experiments is his job.
Conducting experiments is what he does every day.
表语从句是指______________________, 紧跟在________之后，对主语进行解释、说明，使主语的内容具体化。
系动词
在句子中充当表语的从句
Find the predicative clause
表从的连接词
谢引
引导词 用法
从属连词 that 无成分，无意义
Whether 无成分，意为“是否”
连接代词 what, which, who, whom, whose, wh+ever 在从句中充当主语，宾
语，表语，定语
连接副词 how, when, where, why however, whenever, wherever
在从句中充当状语
其它连接词 because, as if ,as though 因为，好像，似乎
表语从句的引导词
表从中不用if
1. 从属连词that与whether
that :在从句中不充当句子成分,无实际意义，一般不能省略。
The truth is that he has never been to the countryside.
whether：起连接作用，意为“是否，究竟，到底”在从句中不充当任何成分。
The question is whether we can finish the experiment by tomorrow afternoon.
2.连接代词
连接代词 what, which,who,whom,whose 等除在句中起连接作用外,在从句中还充当主语、宾语、表语或定语,本身具有词义。
1.Tom is no longer what he used to be. 汤姆已不再是过去的他了。
2.The question is which of us should be in charge of the company.
问题是我们中的谁应该主管公司。
3.The problem is who is suitable for the position.
问题是谁适合这个职位。
4.The important thing is whose name should be put on the top of the list. 重要的是谁的名字应该放在名单的最前面。
What he wants to get is whatever you have.
You can be whoever you want to be.
连接副词 where when why how除在句中起连接作用外;在从句中还分别充当地点、时间、原因、方式状语，本身具有词义。
1. That's where I can’t agree with you.
那就是我不能同意你的地方。
2.That was when he went to the grocery store.
那就是他去杂货店的时候。
3.This is why Sara apologised to me after the conference.
这就是萨拉会后向我道歉的原因。
4.This is how they overcame the difficulties.
他们就是这样克服困难的。
3.连接副词
where 可表示抽象意义，
意为“…的地方，…点”
小试身手
The problem is ___________we can finish the task or not.
The question is ________we can get in touch with him.
The most pleasant thing of the rainy season is ________one can be entirely free from dust.
Running means doing the same thing for a while. That is ________ I did’t enjoy running.
The question is _________ caused the accident.
The most important thing is ___________ responsibility it is.
whether
how
that
why
what
whose
表从的重难点
He failed in the exam. That's _______ he felt frustrated.
felt frustrated.
failed in the exam.
why
连接副词
why做成分(状语)，有意义，不能省略
1.表从中易错连接词 why because
He felt frustrated. That's __________he failed in the exam.
because
felt frustrated.
failed in the exam.
连接副词
1.表从中易错连接词 why because
because做成分(状语)，有意义，不能省略
He failed in the exam. That's why he felt frustrated.
He felt frustrated. That's because he failed in the exam.
结构：因 why 果； 果 because 因
语意：各自表达的侧重点不同
1.表从中易错连接词 why because
I lost the game. The reason was ______ I underestimated my competitors.
The reason ___ I lost the game was _____ I underestimated my competitors.
I lost the game. That was __________ I underestimated my competitors.
名词reason作主语时，后面的表语从句表示原因时要用that引导。
that
why
that
because
2.表从中易错连接词 that; because
He is to blame. That's because he passed a slip of paper in class.
He is to blame. The reason is that he passed a slip of paper in class.
He is to blame.
He passed a slip of paper in class.
2.表从中易错连接词 that; because
The young girl with short hair looks ________ she were a boy.
as if
as though
这个留短发的女生看起来像是个男生。
与事实不符:
表示对现在的虚拟，用一般过去式。
3.表从中易错连接词 as if/as though
李宇春
He talks as if he _________(be) to the moon.
had been
他说的好像去过月球一样。
与事实不符:
表示对过去的虚拟，用过去完成式。
3.表从中易错连接词 as if/as though
Dark clouds are gathering. It seems as if it is going to rain.
看起来好像要下雨了。
与事实相符: 用正常的陈述语气。
3.表从中易错连接词 as if/as though
as if/as though引导的表语从句如果与事实不符，用虚拟语气;
如果是事实或者有发生的可能性，用陈述语气
1. It sounds as if someone ___ knocking at the door.
(与事实相符)
2. Tom likes to talk big as if he ______(be) an important person.
(对现在的虚拟，用一般过去时，be动词用were )
3. He talks as if he _______ become president tomorrow.
(对将来的虚拟，用would/could/might+do)
4. He talked about Rome as if he __________(be) there.
(对过去的虚拟，用had done)
is
were
would
had been
SUMMARY
系动词
连接词
重难点
从属连词，连接代词，连接副词
(注意：as/as if/as though/because)
六大类
That is why.../That is because...
The reason(why...) is that.../That is because...
as if/as though