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)
Predicative Clauses
( 表语从句)
The flower ________________
The flower ________________
Her duty ___________________
The left door ________________
The right one _______________
What impressed me most
________________________________________________________.
looks so beautiful.
smells fragrant.
is cleaning the blackboard.
is that Yuan Longping devoted his whole life to the land
is/remains open.
is/remains closed.
Predicative Clause
Predicative Clauses
( 表语从句)
在复合句中作表语的从句叫做表语从句。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。
主语 + 系动词 + 表语从句(引导词+其他)
结构：
系动词
William is excited about his promotion.
Your plans for the wedding sound nice.
Bob felt sleepy after eating the whole pizza.
The theater gets dark when the show is about to begin.
The crowd stayed calm in spite of the imminent threat.
读下面的句子，关注并回忆常见的系动词有哪些：
常见的系动词有：
be动词: _________________________________
感官动词: _______________________________
“变得词”: _______________________________
“持续词”: _______________________________
am, is, are, was, were
feel, look, smell, sound, taste, seem ...
get, become, turn, grow, fall ...
remain, keep, stay ...
Predicative Clauses
( 表语从句)
在复合句中作表语的从句叫做表语从句。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。
主语 + 系动词 + 表语从句(引导词+其他)
结构：
1. One theory was that bad air caused the disease.
Another was that cholera was caused by an infection.
2.The question is whether we can finish it in such a short time.
3. The reason why he was late is that he got up late.
(1)从属连词: that& whether
用法归纳：
a. that引导表语从句时，只起连接作用，不作句子 成分,没有意义。
c.记住这个固定结构：The reason why ... is / was that ...
引导词的用法
b. whether引导表语从句时，只起连接作用，不作句子成分，通常翻译为“是否”。注意，引导表语从句时通常不用if。
改错：
1.What surprised me most was she was the very person for the role .
2.The question is if we will go hiking next week .
3The problem is that whether he can be equal to the job.
4.The reason ______ he didn’t arrive in time was _____ he get up late .
that
whether
why
that
胜任
1. She is not who she was.
2. Exercise is what keeps us healthy.
3. What I want to know is whose name is Lili.
4. The question is which theory is better.
(2) 连接代词: who, whom, whose, which, what ...
用法归纳：
a.连接代词引导表语从句时，既起连接作用，
又作句子成分(通常作__________________)等。
b.表语从句也必须用陈述语序;
主语，表语，宾语
1.What makes me confused is ______ words are right.
2.The problem is ___________ we can ask for help.
3. 那就是他担心的事情。
That is ________________________.
4. 问题是谁能胜任这项工作。
The problem is _________________________.
what he is worrying about
who is equal to the work
whose/which
whom/who
(3) 连接副词：when, where, why, how ...
1. The house is where Lu Xun once lived.
2. The question is how much effort you can make.
3. That's why you should push yourself.
4. The time I will never forget is when we spent it together.
用法归纳：
连接副词引导表语从句时，既起______作用，
又作句子成分（通常作______）。
连接
状语
1.That’s __________ I can’t agree with you.
2.Jim was caught in a traffic jam this morning.
That’s_____ he was late for school.
3.The last time we had great fun was ________ we were visiting the water park.
4. 这就是我们这里做事的风格。你很快就会习惯。
This is ____we do things here. You’ll soon get used to it.
why/where
why
when
how
1.It looks as if/ as though it is going to snow.
2. When a chopstick is partly in a glass of water, it looks as if it were broken.
(4) 连词 as if, as though引导的表从
用法归纳：
as if / as though 引导表语从句时用陈述语气或虚拟语气 .常置于look , seem ,sound 等词后。
At that time, it seemed ________________he couldn’t
think of the right word.
那时，他好像想不出恰当的词。
as if /as though
That’ why...
That’s because...
The reason(why...) is that...
I didn’t phone her. That ’s why she got angry with me .
I didn’t phone her .That ’s because I got angry with her .
3.She got angry with me ,and the reason was ____ I didn’t phone her .
The reason why she got angry with me was that I didn’t phone her.
用法归纳：
a. That’s why … 那是…的原因 强调结果
b. That’s because … 那是因为… 强调原因
c. The reason is / was that … 不可用because或者why.
that
By Contrast
改错
1.The reason why he failed is because he was too careless.
2.He drove to see his sick mother in hometown, and that’s because he had a few days off .
3.He had a few days off ,and that’s why he drove to see his sick mother .
that
why
because
如果引出表语从句的名词是表示 “建议”或者是“命令”之类的词如advice, suggestion, proposal, order, plan, idea等, 从句中的动词用虚拟语气，即(should)+动词原形。
My suggestion is that we all (should) take an active part in the coming sports meet.
我的建议是我们每个人都应该积极参加运动会。
Attention!
1. His advice to his son is that the fault___________________ (correct) immediately.
2. 船长的建议是我们尽量在天黑之前到达。(arrive)
The captain’s proposal is_______________________________.
(should) be corrected
that we (should) arrive before dark
1. The fact is ______ different people have different opinions towards cloning.
2. What Alex really doubts is _________ his mother will recover from the disease soon.
3. The question is ______ we can do to solve the problem in such a short time.
4. The reason why he was late was ______ he failed to catch the first bus.
that
whether
what
that
一、巩固练习
5. I want to be a teacher. That's ______ I want to be.
6. I had neither a raincoat nor an umbrella. That's _____ I got wet all through.
7. The question is _____ we can turn to for help if necessary.
8. The most exciting moment was _______ I was awarded the first prize.
what
why
who
when
1. The problem is _____to take the place of Ted.
A. who can we get B. what we can get
C. who we can get D. that we can get
2. This is ____ my father has taught me---to always face difficulties and hope for the best.【2018 北京卷】
A. how B. which C. that D. what
二、实战演练
3. By boat is the only way to get here, which is ____ we arrived. 【2018 江苏卷】
A. where B. when C. why D. how
4. Another possibility is _____when there is a lot of talent on a team, some players may make less effort. (2019北京卷阅读理解第二节)
A. how B. that C. what D. why
5. My suggestion is __________ meaures ______ as soon as possible.
A. that...take B. that.... be taken
C. what... took D. that... are taken
Predicative clauses
表语从句
引导词
dreams
作用
说明主语是什么或者怎么样。
主语+系动词+表语从句(引导词+其他)
从属连词：_______,____________;
连接代词:______________________ _______________________________;
连接副词:________________________ ;
其他词:_________________________.
what, who, whom,
whose, which ...
when, where, why, how...
because, as if, as though ...
that
whether
结构
1.Finish the excercise3 in your book on Page5.
2. Preview the passage of “The Father of China’s Aerospace” and underline the sentences with predicative clauses.
Homework