2026届高考英语二轮复习：主语从句 课件(共34张PPT)

(共34张PPT)
The Subject Clause
主语从句
She surprised me.
主
谓
That she is a racing driver surprised me.
主
谓
宾
主语从句
定义：在主从复合句中，充当主语的从句叫主语从句。
宾
定义
That she is a racing driver surprised me.
It surprised me that she is a racing driver.
形式主语
真正的主语
英语句子中为避免头重脚轻，常用it作形式主语，
将真正的主语后置。
从属连词:that/whether/if
01
连接代词:who/whose/whom
what/which...
02
连接副词:when/where/why
how...
03
连接词
that
That they are good friends is known to us all.
It is known to us all that they are good friends.
that无词义，在从句中不充当任何成分，仅起连接作用，但不能省。
从属连词
whether/if 是否
Whether she is a princess is unknown.
It is unknown whether/if she is a princess.
whether/if意为“是否”，在从句中不充当成分，仅起连接作用，不能省略。
注意：位于句首只能用whether，句中whether/if都可以。
从属连词
Exercise
用that/whether/if填空。
1._________ we go there by train or by air is not clear.
2.______ she left him made him very sad.
3._________she will come or not is still a question.
4.It was not known he would ask.
5.______you don’t like him is none of my business.
Whether
That
Whether
whether/if
That
从属连词
连接代词
who谁
Who is the biggest is quite clear.
who在主语从句中作主语，意为“谁”
主语从句：Who is the biggest.
主
系
表
It is quite clear who is the biggest.
连接代词
more examples
Who will be the monitor hasn’t been decided yet.(主语)
Who will attend the meeting is still unknown.（主语）
谁会成为班长还没有决定。
谁会来参加会议还未知。
whom谁
Whom they will choose to carry out the task is a secret.
还原主语从句：They will choose whom to carry out the task.
主
谓
宾
宾补
whom在主语从句中作宾语，意为“谁”
连接代词
It is a secret whom they will choose to carry out the task.
whose谁的
连接代词
Whose scores are higher will come out soon.
主语从句：Whose scores are higher.
定语
whose在主语从句中作定语，意为“谁的”
It will come out soon whose scores are higher.
what ...的事/东西
连接代词
What she did makes him angry.
还原主语从句：She did what.
主
谓
宾
what在主语从句中作宾语/主语，意为 “...的事”
连接代词
more examples
What you have done might do harm to others.
What he need is money.
你做的事情可能会伤害别人。
他需要的是钱。
what常用的句式：what sb. do
eg: what sb. say/need/do/want...
which哪一个
连接代词
Which side will win is not clear.（定语）
which在主语从句中作定语，意为“哪一个”
It is not clear which side will will.
其他连接代词
连接代词
whatever不管什么, whichever不管哪一个, whoever无论谁...
Whoever comes to our school is welcome.(主语)
Whatever you do should do no harm to others.(宾语)
Exercise
连接代词
用适当的关系代词填空。(who/what/which/whose/whatever/whoever...)
1._______I want to tell you is that I love you.
2._______he said really had great impact on me.
3._______break the law will be punished.
4._______surprised me was the way he spoke.
5._______will attend the meeting is unknown.
What
What
Whoever
What
Who
Exercise
1.______matters most in learning English is enough practice.
A.What B.Why C.Where D.Which
2.______we go swimming every day does us a lot of good.
A.If B.That C.Whether D.Who
3.It is uncertain______side effect the medicine will bring about.
A.that B.how C.what D.whether
4.______we will go for a picnic or not depends on the whether.
A.If B.That C.Whether D.Who
5.--Does she like coffee or tea
--It is unknown______she would like to have.
A.how B.which C.what D.that
A
B
C
C
B
连接副词
when什么时候
When he made this candy car is unknown.(时间状语)
It is unknown when he made this candy car.
when在主语从句中作时间状语，意为“什么时候”
连接副词
why 为什么
Why he didn’t come here is not clear to anyone.(原因状语)
It is not clear to anyone why he didn’t come here.
why在主语从句中作原因状语，意为“为什么”
连接副词
where哪里
Where the meeting will be held is not decided.(地点状语)
It is not decided where the meeting will be held.
where在主语从句中作地点状语，意为“在哪里”
连接副词
how怎样
How he became a famous singer is known to us all.
(方式状语)
It is known to us all how he became a famous singer.
how在主语从句中作方式状语，意为“怎样”
连接副词
1._____ he didn’t come yesterday is unknown.
2.____________we will set up the factory should be discussed.
3.__________this happened is not clear.
Exercise
Why
When/Where
How/Why
连接副词
从属连词 连接代词 连接副词
that
whether
if
who
whom
which
whose
what
whoever
whatever
why
when
where
how
无词义
是否
是否
不充当任何成分，不可省略。
谁
谁
哪一个
谁的
...的事
无论谁
无论什么
在主语从句中充当主语，宾语，定语等成分。
为什么
什么时候
在哪里
怎样
在主语从句中充当状语。
it作形式主语
It+be+名词+that从句
a pity遗憾 a fact事实 a shame真可惜 a surprise惊喜
no wonder难怪 no surprise不足为奇 an honor荣誉
It is a pity that we lost the game.
It is a fact that he cheated in the exam.
遗憾的是我们输了比赛。
他在考试中作弊是事实。
It+be+形容词+that从句
important重要的 true真实的 strange奇怪的 possible可能的
likely可能的 obvious明显的 clear清楚的 necessary必要的
It is likely that he will come back tomorrow.
有可能他明天要回来。
It is obvious that the earth is round.
很明显地球是圆的。
It+be+过去分词+that从句
said据说 reported报道 thought有人认为 believed有人相信
known众所周知 suggested有人提议 hoped有人希望
It is reported that the thief was caught yesterday.
据报道昨天那个小偷被抓了。
It is said that he is on business.
据说他在出差。
Exercise
1.It is_____that he quitted his job.
A.say B.saying C.said D.to say
2.It is believed_____light travels faster than sound.
A.that B.whether C.if D.what
3._____________________(据报道)20 people were killed in the accident.
4._____________________(据说)a cow has four stomachs.
5._____________________(众所周知)he is a famous singer.
C
A
It is reported that
It is said that
It is known that
主语从句中的虚拟语气
It+be+名词/形容词/过去分词+that从句
当表示建议，命令，请求等词时，谓语要用虚拟语气“should+do”,should可省略。
It is important/necessary/strange that sb. (should)do sth.
It is suggested/ordered/requested that sb. (should)do sth.
eg: It is important that we(should) learn English well.
学好英语很重要。
Exercise
用括号内适当的词填空。
1.It is necessary that we______________(tell)her the news.
2.It is strange that he_______________(marry)her.
3.It is suggested that we_____________(bring)an umbrella tomorrow.
改错：
It is suggested that we will hold a meeting next week .
(should)tell
(should)marry
(should)bring
(should) hold
特别注意的情况
单个主语从句谓语用单数, 多个主语从句谓语用复数。
When the sports meeting will be held_______(be)not decided.
is
When and where the sports meeting will be held_______(be)not decided.
When they will start and where they will go _______(be)not decided.
is
are
主语从句要用陈述语序。
Why didn’t he come is still a mystery.
Why he didn’t come is still a mystery.
Where she was is not clear.
Where was she is not clear
陈述语序：主语+谓语
who/what引导的主语从句谓语动词的数与后面的词保持一致。
What I need ______ money.
What I need ______ books.
Who you will go with ______ Lucy.
Who you will go with ______ the twins.
is
are
is
are
Exercise
1. leaves the room last ought to turn off the light.
A. Anyone B. The person C. Whoever D. Which
2. _______ he has become a rich man is known to all in our town.
A. Because B. That C. / D. What
3.______ he is a famous actor is astonishing.
A. That B. Which C. / D. What
4. _______ we’ll go camping tomorrow depends on the weather.
A. If B. Whether C. That D. Where
5. _______ Jack looked so excited is not clear.
A. That B. Where C. when D. why
C
B
A
B
D
Exercise
6. _______ that we will go shopping this afternoon.
A. It is a good idea B. It is a pity
C. That is a good idea D. That is a pity
7._______ he saw both surprised and frightened him
A. That B. When C. What D. Which
8._______they wanted was to visit the employees, not the head of the company
A. Which B. Whom C. What D. Why
9._______ is known to us all that America is a developed country.
A. Which B. As C. What D. It
10. ___ he made an important speech at the meeting was true。
A. That B. Why C. What D. How
A
C
C
D
A