Unit 4 Astronomy： the science of the stars主语从句 课件（26张PPT）

课件26张PPT。人教版Book 3 Unit 4Discovering useful structures Noun Clauses as
the Subject It is known that the World Cup is held every four years.
Where the 2018 World Cup is being held is very clear.
That each team has over 11 players in the field is not allowed.
...What do you know about the World Cup?Noun clauses as the subjectGrammarTeaching Aims: By the end of this class, you will be able to:
1. identify subject clauses;
2. understand basic rules of subject clauses;
3. use subject clauses to tell stories.3. To find your way can be a problem. What part do the underlined words serve as in each sentence? 2. Smoking is bad for you.1. You are a student.4 .What she said is not yet known.5. That we shall be late is certain.6. It is certain that we shall be late.subjectA sentence serving as the subject is called Subject Clause. 主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。
How the book will sell mainly depends on its author.
That he is the best student in the class is obvious.
= It is obvious that he is the best student in the class.
主语从句Guide words:
(1)连接词:that，whether，if
如：
That he is determined to stop smoking makes his friends very happy. 他决心戒烟让他的朋友非常高兴。

Whether he’ll come here isn’t clear.??他是否会来这里还不清楚。
Guide words:

(2)连接代词who, whom, whose, what, which, whoever, whatever, whichever
如：
What she did is not yet known.??她干了什么尚不清楚。
Who will win the match is not clear.谁将赢得比赛还不清楚。
Whatever I have done is for you.我做的一切都是为了你。Guide words:
(3) 连接副词 where, when, how, why.
如：
How this happened is not clear to anyone. 这事怎样发生的，谁也不清楚。
When we will hold the meeting hasn't decided.我们将什么时候开会还没有决定。
Basic rules in subject clauses1.主语从句做主语，谓语一般用单数。
Whatever he says is of no importance. Who will come to attend the meeting is not known． Basic rules in subject clauses2.在主语从句中，连词that不能省略。
That our class is a united one is without question.
That we finally won the match excited us a lot． Basic rules in subject clauses3.主语从句要用陈述句的语序。
How he became a great scientist is known to all.
Whether we will go to the park depends on the weather.
Let’s enjoy a song! ____ doesn’t matter ______ I want.____ doesn’t matter ______I need.____ doesn’t matter ______I cry.Don’t matter _____ I bleed.
You’ve been on a road.Don’t know ______ it goes or ______ it leads._____ doesn’t matter _____ I want._____ doesn’t matter _____ I need.____ you’ve made up your mind to go.
I won’t beg you to stay.You’ve been in a cage.Throw you to the wind you fly away.It It It It It whatwhatwhatwhatififwherewhereIfit 作形式主语的结构
whether 与 ifIt doesn’t matter what I want. →
What I want doesn’t matter.
It doesn’t matter if I cry. →
If I cry doesn’t matter. (×)
Whether I cry doesn’t matter. (√)
主语从句置于句首时, 不能用if 引导
如果用it 作形式主语, 就可以用if 引导_______ competes in the World Cup must have very good skills.
Whatever B. Whenever
C. Whoever D. Wherever 【分析】主语从句中缺少做主语的成分，并且指人，含有“无论谁”的意思，故选C.2. It has been announced ___ the next World Cup will be held in Qatar.
A. that B. when C. what D. how 【分析】it做形式主语，真正的主语从句内容完整，故选A.3. 改错
What football attracts so many fans are a
question confusing many women.
____Whyis___ 【分析】why 在此作连接副词，引导主语从句，从句缺少原因状语；以从句形式做主语，谓语通常用单数。4. 语法填空
________ made the country proud was that its football team won the championship. 　　 【分析】what 在此作连接代词，引导主语从句，并在从句中作主语。What Group work According to the pictures, tell stories using as many subject clauses as possible in groups of six. What happened today was unbelievable... What happened today was unbelievable...The spirit of sports is teamwork, competition and friendship. Homework 1. Exercises of “Discovering useful structures” ;
2. 《新课程 新练习》“Grammar”部分。