2023年高考英语二轮语法复习表语从句课件（16张PPT）

(共16张PPT)
表语从句
Predicative Clause
1.定义
表语从句：是在复合句中充当表语的从句，表语从句可由从属连词、连接代词或连接副词来引导。属于名词性从句，用陈述语序。
表语：说明主语是什么，通常用在系动词之后。
系动词分类：
状态类：be ，seem,appear,keep,remain,stay…
感官类：look,smell,taste,sound,feel…
变化类：become,get,turn,grow,fall,come,go…
2.表语从句的连接词
类别 连接词
从属连词 that不做句子成分，无意义，一般不省略。
whether“是否”，不做句子成分，不可用if替换。
as if/though（好像），because（because 引导表语从句通常只用于“This/That/It is because...”结构中。）
连接代词 what，which，who，whom，whose，whoever，whatever，whichever，在从句中充当主语、宾语、表语或定语。
连接副词 when，where，why，how，在从句中充当状语。
①That is what I want to tell you.
那就是我想要对你讲的。
②That is (the reason) why I cannot agree.
这就是我不能同意的理由。
③At that time，it seemed as though I couldn’t think of the right way.
当时，我好像怎么也想不出一个正确的方法。
④The question is when he can arrive at the hotel.
问题是他什么时候到达宾馆。
单句语法填空
(1) What surprised us most is ___________ he spoke English so well.
(2) The problem is ___________ has got away with the document.
(3)That is ___________ mice ruin many stores of grain every year.
(4) At that time，it seemed as ___________ I couldn’t think of the right world.
(5) I had neither a raincoat nor an umbrella. That’s ___________ I got wet through.
(6) He failed the exam again. The reason was ___________ he was too careless.
that
who
how
if/though
why
that
单句语法填空
(1) My idea is __________ you shouldn’t have left the country.
(2)The question is ___________ the composer will turn up in time.
(3) The chance is ___________ one smoker in four will die from cancer.
that
whether
that
单句语法填空
(1) My strongest memory is ___________ I attended an American wedding.
(2) That’s ___________ I help brighten people’s days. If you don’t，who’s to say that another person will
完成句子
(3) He admitted that his father was strict with him. ____________（那就是为什么）he made so many achievements.
when
why
That was why
3.表语从句中的虚拟语气
（1）在表“建议，劝说，命令”的名词 advice，idea，suggestion，request，proposal 等后面的表语从句中，谓语动词用“should + 动词原形”，should 可省略。
The boss’s request is that we（should） achieve the goal we set.
老板的要求是我们要达到我们设定的目标。
My suggestion is that we（should） start early tomorrow.
我的建议是我们明天早点儿出发。
（2）as if/as though 引导的表语从句如果是事实或客观真理，就用陈述语气。
It looks as if we'll be late.我们似乎要迟到了。
如果与事实不符，就用虚拟语气：
①与现在事实不符，从句动词用过去式，be 动词用 were；
②与过去事实不符，从句动词用过去完成时had done；
③用于表示与将来事实相反，从句用would/could/might/should+动词原形。
You look as if you didn’t care．你看上去好像并不在乎。(与现在事实相反)
He talks about Rome as if he had been there before．他说起罗马来好像他以前去过罗马似的。（与过去事实相反）
He opened his mouth as if he would say something．他张开嘴好像要说什么。（与将来事实相反）
单句语法填空
(1)His advice to his grandma is that she _________________ （make） good use of her spare time.
(2)Why doesn’t she buy me a drink It isn’t as if she ___________ （have） no money!
(3)The judge’s proposal is that we ____________（find）more evidence.
（should） make
had
(should) find
A Absolutely. You may not believe it，but that was _______ happened at the initial stage of our group’s research on developing a vaccine for malaria.
B Yes，it is. And it seemed _____all the theories were useful，but the fact
was ______we couldn’t persuade one another that one theory was better
than another.
C Exactly. The problem was not about ________all our theories were equally good，but in deciding ________________ theory to depend upon.
课本p5 David is talking to Maria about their scientific research project. First complete David’s lines （A-E），using the words in the box. Then put
David’s lines in the correct order and practise the conversation.
what
as if
that
as if that what who when how why whose which whether
whether
which/what/whose
D We realised that what we cared about was not ____________ aspect
we needed to develop a theory in，but rather _______ we can reduce
the cost of a vaccine without reducing its effect!
E You’re right. At last，we became focused on the key issue，which was
______we had to carry out the research in the first place.
which/what
how
why
as if that what who when how why whose which whether
1 Research is_________ I'm doing when I don’t know what I'm doing (Werner von Braun)
2 The saddest aspect of life right now is _________ science gathers knowledge faster than society gathers wisdom.(Isaac Asimov)
3 An expert can be _________ has made all the mistakes that can be made in a very narrow field. (Niels Bohr)
4 (Workbook Ex.1) Complete the following ideas by famous scientists
with a word or expression that introduces a predicative clause.
as though because that what whoever why
what
that
whoever
4...when different experiments give you the same result, it is no longer subject to your opinion. That's the good thing about science: It's true whether or not you believe in it. That's______ it works. (Neil de Grasse Tyson)
5 This applied science, which saves work and makes life easier, brings us little happiness. That is________ we have not yet learnt to make sensible use of it! (Albert Einstein)
6 There are only two ways to live your life. One is _________ nothing is a miracle. The other is _________ everything is a miracle.(Albert Einstein)
why
because
as though
as though
as though because that what whoever why
THE END