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(共19张PPT)
Unit 1 Science and Scientists
Discovering useful structures
Predicative Clause
Learning targets
1.Discover the regulation and learn to judge where the predicative clause is .
2.Be familiar with the linking verbs and try to tell their functions.
3.Be able to choose the linking verbs correctly and then use them fluently.
The person stood in front of you just now is headmaster.
The door remained closed.
The house looks old.
predicative
linking verb
subject+linking verbs+ predicative
predicative
linking verb
predicative
1. The definition of predicative clause.
The question is who will do it.
The question is difficult.
在复合句中充当表语的从句叫表语从句。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。
（ 表 ）
（ 表 ）
表语从句
2. The structure of predicative clause.
主语 + 系动词 + 引导词 + 简单句
This is why he did it.
e.g.What I want to say is that I am tired.
表语从句
系动词的分类
1.感官类系动词（sound, look, taste, smell, feel)
2.变化类系动 (get, fall, grow, turn, go, become…)
3.be动词 (am, is, are, was, were)
4.保持类系动词（keep, remain, stay）
5.似乎类系动词（ seem, appear ）
6.证明类系动词（prove, turn out)
表语从句的判断
系动词后的成分为表语。系动词后的从句为表语从句。
The fact was that he had forgotten about it.
Everything remained as it used to be in this room.
She looks as if she were ill.
The trouble was whether we could manage it ourselves or not.
The problem is not who will go, but who will stay.
This is how they overcame the difficulties.
He missed the lecture. It was because his flight was delayed.
Predicative Clause
Activity 1： Underline the linking verbs.
1) In general, doctors in those days had two contradictory theories to explain how cholera spread. One theory was ______ bad air caused the disease. Another was ______ cholera was caused by an infection from germs in food or water. (Para. 2)
2) What is more, in another part of London, a woman and her daughter had died of cholera after moving away from Broad Street. It seemed ______ the woman liked the water from the pump so much that she had it delivered to her house every day. (Para. 3)
that
that
that
Activity 2：合作探究
3) The question is _________ we can rely on him. He often tells lies.
4) The question is _________ we can finish the task on time, for we have only three days left.
whether
whether
Summary1:
that ____ 意义，在表语从句中 ______ 成分,起______ 作用，________ 省略。
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、究竟、到底
不能
无
不充当
连接
不能
1) China is no longer _______ she used to be.
2) The question is _______ of us should come first. (我们两个中的哪一个)
3) The problem is ______ is really fit for the hard job.
4) The important thing is _______name should be put on the top of the list.
what
which
who
whose
Summary2:
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
1) That’s _______ I can’t agree with you.
2) This is ______ Sara was late for the meeting. (She missed the early bus.)
3) This is _____ they overcome the difficulties.
4) My strongest memory is ______ I attended an American wedding as a child.
where
why
how
when
Summary3:
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
1) Dark clouds are gathering. It looks as if it’s going to rain.
2) It sounded as if the night would never end.
3) That’s because we were in need of money at that time.
Summary4:
as if / as though 引导的表语从句常置于_________ look, seem, sound,be,become 等_________。
That’s because 翻译为“那是因为......”。
That’s why...翻译为“那是...的结果”。
系动词
后面
Summary:
连接词
连词: that, whether, as if, as though, because …
（在从句中不作成分）
连接代词: what, who, whom, whose, which, …+ever
（在从句中作主语、宾语、表语、定语）
连接副词: when, where, how, why, …+ever
（在从句中作状语）
Activity 3：归纳总结
1) The reason why he is late for school is ________ he
missed the bus.
2) Why we decided to put off the football match is ________
the weather was too bad.
3) I think that’s _____ he was so angry.
4) I think it is ________ you are doing too much.
5) The reason ______ he was so late is _____ it was raining hard.
that
that
Activity 4：问题分析与判断
why
because
why
that
辨析1：当主句的主语是 _____________ 或 why 引导的 __________时常用 ______ 来引导表语从句，而不用 because。
the reason
主语从句
that
That / This / It + is / was +why + ________ (原因 / 结果)
表示“_________________________”
That / This / It + is / was + because + _______ (原因 / 结果)
表示“________________________”
The reason why … is that … 中 why 是引导 _________，that 引导的是 _________，表示“___________________”。
原因
这 / 那就是……的原因
结果
这 / 那就是因为……
定语从句
表语从句
……的原因是……
1) My suggestion is that we ____________ (go) and help him.
2) My advice is that we ____________ (get) there by train.
(should) go
(should) get
辨析2：当主句的主语是表示建议（suggestion, advice）、命令（order, command）、要求（request, desire, requirement, demand, proposal）等的名词时，表语从句要用虚拟语气，即（should）+ 动词原形。
1. It sounds as if someone ___ knocking at the door.
2. Tom likes to talk big as if he ______ an important person.
(对现在的虚拟，用一般过去时，be动词用were)
3. He opens his mouth as if he ________ say something.
(对将来的虚拟，用would/could/might+do)
4. He talked about Rome as if he ___________ there.
(对过去的虚拟，用had done)
(与事实相符)
is
were
would
had been
辨析3: as if/as though 引导从句的虚拟语气：
若跟现在事实不符：过去式（be动词用were）
若跟将来事实不符：would/could+动词原形
若跟过去事实不符：had done
单句语法填空
1.I am afraid he’s more of a talker than a doer,which
is_____he never finishes anythinɡ.
2.Part of the reason_____ Charles Dickens loved his own
novel,David Copperfield,was_____ it was rather closely
modeled on his own life.
3.It seems as if our team ___（be） ɡoinɡ to win the ɡame.
why
why
that
is
4.The little ɡirl who ɡot lost decided to remain_______ she
was and waited for her mother.
5.The last time we had ɡreat fun was______we were visitinɡ
Water Park.
6.Did you see the colourful flaɡs on top of the buildinɡ
That was______we did this morninɡ.
7.______ made the school proud was_____more than 90% of
the students had been admitted to key universities.
where
when
what
What
that
Thank you

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