(共30张PPT)
Noun clauses as
the subject
Unit 4 Grammar
QUIZ
课前小测
1. ______ watch was lost is unknown.
2. ________ you did is right.
3. _________ we will go for an outing
tomorrow remains unknown.
4. ______ we need is time.
5. ______ will be our monitor hasn't been decided yet.
whether what who whose whatever
Use the words below to fill in the blanks.
Whether
What
Whatever
Whose
Who
上面的空大家都填对了吗?
上面每个句子的主语,大家能找到吗?同时思考这些主语有什么特别之处?
1. Whose watch was lost is unknown.
2. Whatever you did is right.
3. Whether we will go for an outing
tomorrow remains unknown.
4. What we need is time.
5. Who will be our monitor hasn't been
decided yet.
Find out the subject 主语在哪里?
1. The sky in the countryside seems quite blue.
2. Flying in my own house is my dream.
3. To apologize to his parents was a terrible thing for him.
4. What I have got is all here.
1. The sky名词做主语 in the countryside状 seems quite blue.
2. Flying in my own house 分词做主语is my dream.
3. To apologize to his parents不定式作主语 was a terrible thing for him.
4. What I have got句子作主语 is all here.
总结:句子中的主语除了名词、代词, 还包括不定式、分词甚至句子都可以充当。
“是句子必有主谓 有主谓必成句子”
主语从句 (Subject Clause)
如果一个句子在复合句中充当一个主语, 那么这个句子就是主语从句。
That he finished writing the composition in such a short time surprised us all. What we need are good doctors.
Whom we must study for is a question
of great importance.
连接词—连词不充当句子成分 只起连接作用 不可省略
That
That the earth moves around the sun
is well known.
Whether (是否)
Whether he will come or not is not
known yet.
what
What you need is more practice.
which
Which one is the best is not clear.
连接词—代词充当句子基本成分 且有实际意义 不可省略
Who
Who will go makes no difference.
whoever whatever whichever
when, where
Where he has gone is a question.
When the show will be on isn’t known.
why, how
Why there is gravity is hard to
understand.
How he can earn a living in Britain
remains a big problem.
连接词—副词充当句子状语成分 有实际意义 不可省略
8. whoever、whatever、whichever可引
导主语从句。
Whoever comes will be welcome.
Whatever he did was right.
Whichever of you comes in will receive
a prize.
引导主语从句连词有that, whether, who, what, whatever等。
2. 连词位于句首不能省略。
3. 主语从句大多数情况下视为第三
人称单数, 但在关系代词what引导
的主语从句后谓语动词的数要根
据句意而定。
小结
为了防止句子头重脚轻,通常把形式主语it 放在主语位置,真正主语后置。
1. It is certain that he will win the match.
2. It is true that he has made a very
important discovery in chemistry.
3. It is very likely that they will hold a
meeting.
以that 引出的主语从句,常以形式
主语it引导, 结构为: It is +形容词/
名词/某些动词ed + that 从句。
2. 在有些that从句中要用虚拟语气 ?
?(should +do/should +have done)。
延伸与了解
whether与if均为“是否”
但下列情况下只用whether :
1. 引导主语从句并在句首 Whether he will come is not clear.
2. 引导表语从句
The question is whether he’ll come.
3. whether从句作介词宾语
I’m not sure about whether we’ll
win.
4. 引导让步状语从句时 Whether you like it or not, you’ll
have to do it.
1. 主语从句位于句首时必须由连接词
引导。
2. 主语从句后置时引导词that可省略。
3. 主语从句位于句首时,不能用if 引导。
4. 主语从句后置时, 可以用if引导。
注意事项
What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.
It was not immediately obvious that water was fundamental to the development of life.
How they suddenly disappeared still remains a mystery.
Whether life will continue on the earth for
millions of years to come will depend on
whether this problem can be solved.
Find out the subject in the following sentences
What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.
It was not immediately obvious that water was fundamental to the development of life.
How they suddenly disappeared still remains a mystery.
Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.
Find out the subject in the following sentences
1. ____makes this shop different is
that it offers more personal
services.
A. What
B. Who
C. Whatever
D. Whoever
2. These wild flowers are so special I would do____ I can to save them.
A. whatever
B. that
C. which
D. whichever
3. ____in the regulations that you
should not tell people the passport
of your e-mail account.
A. What it required
B. What requires
C. It is required
D. It requires
4. It is pretty well understood ____
controls the flow of carbon dioxide
in and out of the atmosphere today.
A. that B. when
C. what D. how
5. _____ made the school proud was
____ more than 90% of the
students had been admitted to
key universities.
A. What; because
B. What; that
C. That; what
D. That; because
6. It now appears ___ they are in need of help.
A. that B. which
C. what D. how
7. ____ knows the truth will tell you about it. A. Who that B. Whoever C. Whom that D. That who
8. It is good news ___ they will
arrive in a few days.
A. which B. what
C. that D. how
他出生在何地还不知道。
2. 谁会赢得比赛还不知道。
3. 谁来都欢迎。
4. 那个人为什么被谋杀尚不知道。
Where he was born has not been found.
Why the person was murdered is still unknown.
Who will win the match is still unknown.
Whoever comes is welcome.
Homework
Review what we have learned in class by referring to the explanation on Page 92.
Finish the exercise 2 on Page 29.