人教版高中英语必修三课件 unit4 Period 4语法课件 ]

(what 引导主语从句，在从句中作表语，意思是“什么”)
2. Who will go makes no difference.
(who引导主语从句，在从句中作主语，意思是“谁”)
3. It was not immediately obvious that water was to be fundamental to the development of life. (it作形式主语，真正的主语是that引导的 主语从句，that在从句中不作句子成分，没有任何实际意思，只起 引导词的作用。)
1. Study the sentences carefully and you can refer to the dictionary or other reference books
2. Make a mark where yΒιβλιοθήκη u can’t understand
3. Finish this task within 15 minutes
慧眼闪闪
1. 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. 2. What is even more important is that as the earth cooled down, water began to appear on its surface. 3. It was not immediately obvious that water was to be fundamental to the development of life. 4. whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.
Period 3 Grammar -------Noun clauses as the subject
English speech
To the audience: Attention; Interaction To the speaker:
Confidence; Fluency; Accuracy!
慧眼闪闪
1. 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. 2. What is even more important is that as the earth cooled down, water began to appear on its surface. 3. It was not immediately obvious that water was to be fundamental to the development of life. 4. whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.
1. To master the basic usage of noun clauses as subject. 2. To learn to use the Module verbs noun clauses as
subject in the real situation through self-study and practice. 3. Be absorbed in English study and enjoy the beauty of English.
Group discussion
1. 主语从句的语序 2. that
1）作成分吗？有意义吗？ 2）何时省略？ 3）that与what的区别 3. it 作形式主语的情况; 4. if与whether何时可互换？ 5. 主语从句的主谓一致问题 6. 如何选择主语从句的引导词
Special attention
Conjunctions(连接词)of Noun Clauses as the subject
连接词 连接代词 连接副词
that, whether, if, because，as if (as though) （不充当从句的任何成分）
what, whatever, who, whoever, whom, whose, which, whichever (充当从句的主语、宾语、表语、定语）
when, where, how（---）, why
（充当从句的状语）
1. 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.
Self-directed study
content demands
1. Learn grammar by yourself and try to make a summary of the usage of them according to the examples
2. Finish the little quiz to see if you have mastered them.
4. Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.(whether 引导 主语从句，在从句中不作任何句子成分，意思是“是否”)