人教版（2019）选择性必修第一册Unit5 Working the land Learning about Language 语法：主语从句课件(共21张PPT)

(共21张PPT)
Subject Clause
主语从句
Discover Useful Structures
Unit 5 Working the Land
Learning aims
1. To master the concept of subject clause and its basic usage.
2. To use subject clause’s conjunctions correctly.
3. To use subject clauses in real situations.
句子
类型
简单句
并列句
复合句
主句
形容词性从句 (定语从句)
名词性从句
副词性从句(状语从句)
主语从句
宾语从句
表语从句
同位语从句
从句
Definition and types:
Step1. Lead-in
5. To find your way can be a problem.
4. Smoking is bad for you.
1. Jane works hard.
2. You are a student.
3. The old should be respected.
Step2. What’s the subject and subject clauses
6. What she said is not yet known.
结论：主语:句子说明的人或事物，一般放在______。
主语从句:在主从复合句中，充当 的从句。
句首
主语从句作主语
名词作主语
代词作主语
形容词作主语
动名词作主语
动词不定式作主语
7. It is a pity that you didn’t see him.
主语从句作主语
主语
Step3. 主语从句的引导词
连接词有从属连词、连接代词和连接副词。
从属连词：
that、whether 、 if
连接代词：
who、whoever、whom、whose、what、whatever、which、whichever
连接副词：
when、where、how、why、whenever、 wherever、 however
1.That Yuan devoted all his life to developing hybrid rice moved all people around the world.
2.Whether it was possible to develop a hybrid plant was a matter of great debate .
that _____成分，___意义，____省略。
whether ____成分，__意义，译为_____。
从属连词引导主语从句只起引导作用，在主语从句中 任何成分；
不做
是否
无
不能
不做
有
1. ： that、whether 、 if
引导主语从句的从属连词
从属
连词
不充当
Who will go makes no difference.
What we need is more time.
Which book I shall choose hasn't been decided.
Whoever breaks the law will be punished.
who在主语从句中充当 _____, 译为 ___。
what在主语从句中充当 _____, 译为 ____。
which在主语从句中充当 _______, 译为 _______。
whoever在主语从句中充当 _______, 译为 _______。
2. 连接代词: who、whoever、whom、whose、what、whatever、which、whichever
宾语
什么
主语
谁
主语
无论谁
定语
哪一个
连接
代词
When we will leave hasn't been decided.
Where the meeting will be held is not known.
Why he cries is not clear.
How she keeps healthy is a secret.
when在主语从句中充当 _______, 译为 ______。
where在主语从句中充当 _______, 译为 ______。
why在主语从句中充当 _______, 译为 _______。
how在主语从句中充当 _______, 译为 _______。
3.连接副词：when、where、how、why...
连接
副词
状语
什么时候
状语
哪里
状语
为什么
状语
怎样
注意：what 与 that在引导主语从句时的区别
1. _______ you said yesterday is right.
2. _______ she is still alive is exciting.
3. _______ he lost the bike worried him a lot.
4. _______ he lost yesterday is his bike.
What
That
What
That
what 既引导从句，又在从句中充当 、 或 ，而且
(有/没有)意义，而that 只引导从句，在从句中 (充当/不充当)成分，也 (有/无)意义。
主语
宾语
表语
有
不充当
无
“缺什么补什么”原则
缺主语，指人用____，指物用_____
缺宾语，指人用______ _，指物用____
缺时间状语用______；
地点状语用______；
原因状语用_____；
方式状语用_____；
定语用____________；
什么都不缺用_______，缺“是否”_______
who
what
who/whom
what
when
where
why
how
which/whose
如何选主语从句的连接词？
that
whether
Step4.主语从句语序
When will he come is not known.
When he will come is not known.
√
×
主语从句一律用 ，即主语在前，谓语在后。
陈述语序
Step5： 主语从句 主谓一致 问题
1. Whether the patient will be taken ______ (be) unknown.
2. When and where the patient will be taken _____ (be) unknown.
3. When the task can be finished and whether he can have a rest _____ (be) unknown.
4. What he wants most ____ (be) staying with his family.
What they need _______ (be) masks(口罩).
is
单个从句做主语，谓语大多数使用_______ (单数？复数？)
单数
由两个连接词引导同一个主从，谓动使用____ (单数？复数？)
单数
主语为and连接的两个主从时，谓动使用____ (单数？复数？)
复数
what在主从中做宾语时，谓语的单复数取决于它后面的 。
are
is
are
is
表语
Exercise:
1. That he will pass the exam (be)certain.
2. When and how he solved the problem (be ) not clear.
3. What he wanted to do (be) to have a good rest.
4. When they will start and where they will go
(be) still unknown.
are
is
is
is
Step6： 主语从句太长怎么办？
That all countries work together is important.
用一个 It 来解决问题！
It is important that all countries work together.
★主语从句为了避免头重脚轻现象,用it做 ，而把从句放在后面充当 。
真正的主语
形式主语
1. That the earth moves around the sun is well known.
It is well known that the earth moves around the sun.
2. That she has made such a mistake is a pity .
It is a pity that she has made such a mistake.
3. Whether he'll come here isn't clear.
It isn't clear whether/if he'll come here.
注意：主语从句位于 时, 不能用if 引导, 主语从句 时, 才可以用if引导。
Exercise:
句首
后置
Step7： It 作形式主语的句型
1. It seems that you disagree with the plan.
2. It’s a pity that you can’t attend my birthday party.
3. It is suggested that the meeting be put off.
4. It is necessary that several nurses (should) stay.
不及物动词或系动词
It + + 主语从句 (seem, appear, happen…)
It+ be + + 主语从句 (a pity, a fact...)
名词
It+ be + + 主语从句 (said, believed, reported, known, proved, …)
过去分词
It+ be + + 主语从句(necessary, obvious, true, strange, natural...)
形容词
Summary
主语从句
复合句中用作主语的从句叫作主语从句
含义
从属连词: that, whether
连接代词: who, whoever, whom, whomever, whose, what, whatever, which, whichever
连接副词: when, where, how, why, whenever, wherever, however
连接词
注意
语序问题: 陈述语序(主语+谓语)
主谓一致问题
It作形式主语的句型
1. ________ will be in charge of the company is a mystery.
2. ________ we will go for a picnic tomorrow depends on the weather.
3. ________ cars will be parked in the future is a question.
4.It is very important a student (should) learn English well.
5.____ was a pity that you missed the film.
6._______ made her sad was that she failed the English exam.
7. breaks the traffic rules should be punished.
8.________ role he will play in the film hasn’t been known.
9. _______ prices will go up is certain.
10. ________design is the best must be tried in practice.
Exercise: 单句语法填空
Who
Whether
Where
That
Which
that
It
What
Whoever
What
课文原句回顾
1. However, 　　　　 concerned him most was 　　　　
farmers often had poor harvests and sometimes even had a
serious shortage of food to eat.
2. 　　　　 this could be done was a challenging question at the
time.
3. However, 　　　　 it was possible to develop a hybrid of self-
pollinating plants such as rice was a matter of great debate.
4. Today, 　　　　 is estimated 　　　　 about 60 percent of
domestic rice...
5. 　　　　 impresses people most about Yuan Longping is his
ongoing ability to fulfil his dreams.
what
that
How
whether
it
that
What
1. (令我们印象最深的是) your art skills, in which you showed outstanding talent.
2. (我们何时召开会议) is an important question.
3. (这个计划是否会执行) is still unknown.
4. (他将要参加会议) has excited every one of us.
5. (据报道) no passagers were injured in the accident.
Homework: 根据汉语意思完成英语句子
What impressed us most were
When we will have a meeting
Whether the plan will be carried out
That he will attend the meeting
It is reported that
Thank you