主语从句(人教版高中英语必修三unit4)
合集下载
必修三Unit4主语从句
必修三Unit4主语从句（Noun Clauses as the Subject）主语：是句子所要说明的人或事物，是句子的主体，主语的位置通常在句首，一般不省略，是谓语的陈述对象；表示句子说的是"什么人"、“什么事”、“什么东西”、“什么地方”等等。
通常名词、代词、数词、动名词、To do不定式、一个句子都可以做主语。
谓语：是对主语动作或状态的陈述或说明, 指出“做什么”、“是什么”或“怎么样”. 谓语动词的位置一般在主语之后。
找出句子的主语A tree has fallen across the road.You are a student.To find your way can be a problem.Smoking is bad for you.“How do you do?” is a greeting.What she said is not yet known.That we shall be late is certain.It is certain that we shall be late.在句中起主语作用的从句叫，它是名词性从句之一。
How the book will sell depends on its author.That he is the best student in the class is obvious主语从句用法归纳：(一)语序主语从句使用，其通常结构为“引导词+ 主语+ 谓语+ 其他成分”；但当连接代词同时充当从句主语时，其结构为“连接代词+ 谓语+ 其他成分”，。
That he will come and help us is certain.How the book will sell depends on its author.(二)引导词①that引导主语从句时，也任何成分，但通常省略.That they are badly in need of help is quite clear.但是这类句子在大多数情况下会放到整个句子的后部去，而用代词it作形式主语。
高中英语人教版必修三教师用书Unit4SectionⅢGrammar——主语从句
Section ⅢGrammar——主语从句[语境自主领悟]一、主语从句的基本用法1．主语从句的引导词你将来伦敦是好久以来我听到的最好的消息。
Whether it will do us harm remains to be seen.它是否对我们有害还要看一看。
What I have seen today has made a very deep impression on me. 今天我的所见所闻给我留下了非常深刻的印象。
Whoever breaks this law deserves a fine.触犯本法者应予以罚款。
Whichever(of you)comes in first will receive a prize.(你们中)谁先进来谁得奖。
When we will have a meeting is an important question.我们何时举行一次会议是个重要的问题。
Where we shall do the test is still under discussion.我们在什么地方做这个实验还在讨论。
[名师点津]主语从句中连接词的选择技巧(1)根据连接词在从句中所作的语法成分。
(2)根据连接词在从句中的意义。
[即时训练1]用whether，that，whoever填空①That she became an artist may have been due to her father's influence.②Whether we will hold a party in the open air tomorrow depends on the weather.③Every year，whoever makes the most beautiful kite will win a prize in the Kite Festival.2．it作形式主语为保持句子平衡，常把主语从句后置，而用形式主语it代替。
必修3 unit4 主语从句
It occurred to me that I hadn’t finished my homework. It happened that I saw him yesterday. It makes no difference whether he will attend the meeting or not.
4.Will tell me how I( can keep fit 宾语从句 ) and healthy? 5.His trouble is where he can find (表语从句 ) a new job. 6.What is needed (主语从句 ) for the space trip is careful preparation.
It is believed that the couple have left the country. It is reported that the project will be completed. It was said that he had gone abroad to study medicine.
用it作形式主语的主语从句
It + be + 过去分词 ＋ that从句
寻找主语从句
连接词
It is believed that… 人们相信… It is said that…… 据说… It is known to us/all that …. 众所周知…
翻译下列句子：
重点难点
It作形式主语
1.The problem was who could do the (表语从句 ) work. (主语从句 2.Who will go ) makes no difference. 3.Do you know whom John Adams was (宾语从句 ) speaking to.
人教高中英语必修3Unit4 Grammar The subject clause主语从句(共29张PPT)
1）主语从句在句首只能用whether, 有it作形式主 Conclusion: 语时whether/if都可以。
2）whether/if 在从句中不充当句子成分，
但有意义“是否”，不能省略。
3.连接代词和连接副词的用法：
1）连接代词：what (whatever ) ，who( whoever) ， which (whichever)，whom，whose .可以在从句中作主语，宾语表语。
* If we will have a meeting hasn’t been
decided yet. ×
Pay attention:放在主语从句句首，表示“是 否”时，只能用whether, 不能用if
Correct or not?
10
What
*That party
she will
wants to be held .
It is certain that price will go up .
3. That they are badly in need of help is quite clear.
It is quite clear that they are badly in need of help.
Pick up one number and finish the task in it, then you can get some scores.
3.How did dinosaurs die out is still a mystery.
dinosaurs died out Conclusion: 从句必须用陈述语序。
注意: 由that 引导的主语从句有时为了使句子结构平衡,
避免 “头重脚轻”, 常用 it 作形式主语, 而把从句放在 后面。 例如:
人教必修三 Unit4 主语从句详细讲解课件56PPT
that 只有引导定从才做成分
• 5．what与that在引导主语从句时的区别 • what引导主语从句时在从句中充当成分，如
主语、宾语、表语等；that则不作任何成分， 只起连接作用。
• ①What has made him mad is not known yet. • (what在从句中作主语) • ②What you said yesterday is right. • (what在从句中作said的宾语) • ③That she is still alive is a consolation. • (that不作任何成分)
(引导名词性从句的关联词):
从属连词 that, whether, if，
(不作成分）
连接代词 what, who, whom, （作成分） whose, which, wh+ever 连接副词 when, where,why,how
（作状语）
9
1.引导词 that
that放在句首引导主语从句，在主语从句中 不充当任何成分也无实际意义。但是不能省略。
It + be + 名词 ＋ that从句
It is a pity that… It is a surprise that …. It is a fact that……
遗憾的是…… 令人惊奇的是…… 事实是……
It + 不及物动词 ＋ that从句
It appears/seems that… 似乎……
★_W__h_a_t he offers is what I need.
★ _W__h_at__ they are most interested in is
how they can produce more and better cars.
高中英语必修三Unit4-主语从句
It happened that...
碰巧……
It occurred to me that…我突然想起…
It appears/seems that… 似乎，好像…
It turned out that… 原来…
*_I_t_h_a_p_p_e_n_e_d__t_h_a_t_(刚好)I was out yesterday.
主语从句的规律：
例4. That whether he will help others is a fact.
正：That he will help others is a fact.
规律四、主语从句中的连词不能重叠使用。
主语从句的规律： 例5. When he will come are a puzzle. 正：When he will come is a puzzle.
4) 连接副词when, where, how ,why
1.When we will leave（我们什么时候离开） hasn’t been decided. 2.How he got there (他怎么到那的） is a secret. 3. Why he cried (他为什么哭）is not clear. 4. Where the meeting （会议将在哪里举行） will be held is not known.
主语是？
Which part serves as subject in each sentence? 1. You are a student. 2. Smoking is bad for you. 3. To find your way can be a problem. 4. “How do you do?” is a greeting.
人教高中英语必修3Unit4Subject-clause主语从句 (共25张PPT)
Faced with the failure in our life, what should we do?
What we should do is to……
What doesn’t kill you makes you stronger, stand a little taller.
What doesn’t kill you makes you a fighter.
called 《American Idol 》.
Summary1:
• 定义：主语从句是在复合句 中充当_____的从句。
• 主语从句要________ 语序。
Task2: (1)Complete the sentences:
• 1.W__h_at_ is important in our life is to have a great aim. 生活中重要的事情是有一个伟大的目标。
that
a
sparrowcana Nhomakorabeasofly
in
That they learn English so well is no wonder.
It is no wonder that they learn English so well.
On April 1st,2017 ,that China will establish (建立）
Summary 4:
一般来说，主语从句都是位于 _句_首___,但有时为了使句子 _________,避免“头重脚轻”,常 用___ 作形_式_主__语___,从而把主语从 句放到后面。
常用句型：
It is +adj. +that…… It is + n. + that…… It is + 过去分词 + that …… It happens/appears/seems/occurred to sb. that……
What we should do is to……
What doesn’t kill you makes you stronger, stand a little taller.
What doesn’t kill you makes you a fighter.
called 《American Idol 》.
Summary1:
• 定义：主语从句是在复合句 中充当_____的从句。
• 主语从句要________ 语序。
Task2: (1)Complete the sentences:
• 1.W__h_at_ is important in our life is to have a great aim. 生活中重要的事情是有一个伟大的目标。
that
a
sparrowcana Nhomakorabeasofly
in
That they learn English so well is no wonder.
It is no wonder that they learn English so well.
On April 1st,2017 ,that China will establish (建立）
Summary 4:
一般来说，主语从句都是位于 _句_首___,但有时为了使句子 _________,避免“头重脚轻”,常 用___ 作形_式_主__语___,从而把主语从 句放到后面。
常用句型：
It is +adj. +that…… It is + n. + that…… It is + 过去分词 + that …… It happens/appears/seems/occurred to sb. that……
人教版高中英语必修三 Unit 4 Astronomy Subject Clauses 主语从句课件
❖ What I like most is ..
❖ What I dislike is ..
❖ what I find difficult is...
❖ what worries me is...
❖ what I want to say is..
❖ It’s +adj.+that...
homework
❖ 6.It is not yet decided ________school he will go next year.
❖ 7. ______he was late is that he missed the bus.
❖ 8._________ we can protect the environment needs to be discussed.
❖ 10.Where she is from is unknown.
连词 连接代词 连接副词
引导词
that whether who whoever what whatever which whose when where why how
意思
是否 谁 无论谁
什么，所…的
无论什么 哪一个 谁的 什么时候 哪里 为什么 怎样，如何
•Subject
Clauses 主语从句
Let’s enjoy a song “As long as you love me” and pay attention to the
underlined sentences.
❖ Although loneliness has always been a friend of mine I'm leaving my life in your hands People say I’m crazy and I am blind 宾语从句 Risking it all in a glance How you got my blind is still a mystery.….
❖ What I dislike is ..
❖ what I find difficult is...
❖ what worries me is...
❖ what I want to say is..
❖ It’s +adj.+that...
homework
❖ 6.It is not yet decided ________school he will go next year.
❖ 7. ______he was late is that he missed the bus.
❖ 8._________ we can protect the environment needs to be discussed.
❖ 10.Where she is from is unknown.
连词 连接代词 连接副词
引导词
that whether who whoever what whatever which whose when where why how
意思
是否 谁 无论谁
什么，所…的
无论什么 哪一个 谁的 什么时候 哪里 为什么 怎样，如何
•Subject
Clauses 主语从句
Let’s enjoy a song “As long as you love me” and pay attention to the
underlined sentences.
❖ Although loneliness has always been a friend of mine I'm leaving my life in your hands People say I’m crazy and I am blind 宾语从句 Risking it all in a glance How you got my blind is still a mystery.….
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
主语从句后置!
为了避免主语冗长,句子头重脚轻,经常用it作 形式主语,主语从句放在后面作真正的主be late is certain. -- It’s certain that we shall be late.
1. That the earth is round is known to all.
Correct or not?
10
*That she wants to know is when the party
will be held .
×
What she wants to know is…….
Pay attention:此主语从句缺少成分-宾语， 故用作成分的what来引导，而不用that。
It is a fact that……
事实是……
It + 不及物动词 ＋ that从句
It appears that…
似乎…
It happens that ….
碰巧…
It occurred to me that…… 我突然想起……
*__It_i_s_a__p_it_y_t_h_a_t__(很遗憾)we lost the match.
What seems easy to some people seems difficult to others. Which side will win is not clear.
3)连接副词when，where， how， why等
Why he did it remains a mystery. When they will start is not known yet. How he became a great scientist is known to us all.
*_I_t_i_s_a_f_a_c_t_t_h_a_t _(这是事实)he cheated in the exam.
*_I_t_i_s_p_o_s_s_ib_l_e_t_h_a_t__(很可能)she will come back tomorrow. *_I_t_i_s_o_b_v_io_u__s_th__a_t __(很明显)this measure is effective.
名词性从句的作用相当于名词，因此主语从句、 表语从句 、宾语从句和同位语从句分别作主句 的主语、表语、宾语和同位语。
Who will win the match is still unknown.
主语从句
I want to know what he has told you.
宾语从句
The fact is that we have lost the game.
-- It’s known to all that the earth is round. 2. That you missed the chance is a pity.
-- It is a pity that you missed the chance.
用it形式主语的that从句有以下四种 不同的搭配：
It + be + 形容词 ＋ that从句
It is necessary that… 有必要… It is important that …. 重要的是… It is obvious that…… 很明显……
It + be + -ed分词 ＋ that从句
It is believed that…
人们相信…
10
*It is important that we will finish the work
on time.
×
It is important that we should finish…..
Pay attention:注意虚拟语气在名词性从句中的
使用！在It is necessary \important \natural\... that…句型中，从句的谓语要用should+do 的形式
表语从句
The news that we won the game is exciting.
同位语从句
主语从句
在句中充当主语的从句叫做主语从句。
1.连接词：
1）从属连词：that， whether等. that 引导主语从句只起引导作用，本身 无实际意义，在主语从句中不充当任何 成分，但不能省略。
It is known to us/all that …. 众所周知…
It has been decided that…… 已经决定……
It + be + 名词 ＋ that从句
It is common knowledge that… …是常识
It is a surprise that …. 令人惊奇的是…
1.___ he made an important speech at
the meeting was true.
A. That B. Why C. What D. How
2. ___we’ll go camping tomorrow depends on the weather .
A If
B Whether
3.That is certain that we can win. It is
4.No matter who leaves the room last ought to turn off the lights. Whoever
5.If the policemen will come is not certain. Whether
C That
D Where
3. It worried her a bit ___ her hair was turning gray.
A.whether
B. that
C. what
D. when
4.What I say and think ___ none of your business.
A. is B. are C. has D have
4. 主语从句需注意的问题 注 意：
1.“if” 不能引导主语从句，应有“whether”引 导2.主。语从句中用陈述语序 3.主语从句的 “that” 一般不能省。
4.“what”引导主语从句时，谓语动词： 1）常与其后的名词作表语一致 2）根据句子的语 境而定。
1.What you left are only several old books.
Correct or not?
10
*When the meeting will be held haven’t been
known yet.
×
……………………………. be held hasn’t been known yet. Pay attention:主语从句的谓语用单数形式
Correct or not?
2.What you said is of great importance.
3.Whether he’ll come here is not clear.
改错练习
1.Where shall we spend the holiday isn’t decided. we shall
2.You have made a mistake is a fact. That you have
That she left him cut him to the heart.
That he will come is certain.
由whether及其他连词引导的主语从句 放在句首，句后都可。
Whether it will please them is not easy to say.
2)连接代词who ，what ，which, whatever, whichever, whoever