Unit 5 Discover useful structures 主语从句导学案-2023-2024学年高中英语人教版（2019）选择性必修第一册
2023-10-30
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内容正文：
名词性从句——主语从句
一、学习目标：通过学习，让同学们掌握并熟练运用主语从句。
二、学习重点：学生掌握主语从句的定义及引导词的用法。
三、学习难点：学生能运用主语从句准确地翻译句子。
教学过程：
找出主语并分析由什么充当：
1.Jane is good at playing the piano.
2.To see is to believe.
3.Smoking is bad for health.
4. Seven are killed in the accident.
5.He went to school by bike.
6.What he has said is true.
主语从句的定义：在复合句，充当句子主语的从句叫主语从句。
主语从句的连接词：
1) 从属连词___________________________________________
2) 连接代词___________________________________________
3) 连接副词___________________________________________
找出下列句子的主语从句及连接词：
1.That he will come is certain.
2.Whether it will please them is not easy to say.
3.What seems easy to some people seems difficult to others.
4.Which side will win is not clear.
5.Why he did it remains a mystery.
6.When they will start is not known yet.
7.How he became a great scientist is known to us all.
8.Who will take part in the meeting has not been decided.
9.Whoever breaks the law will be punished.
10.Where she is from is unknown.
主语从句连接词的选用
一、从属连词that, whether
1._______ he can win is not known.
2._______ the boy study hard makes the teacher happy.
总结that、whether的用法：
that 仅起______作用，_____意义，在从句中______句子成分，______省略。
whether表“______”的意思, _____句子成分。______省略。不能用if替换。
二、连接代词who, whom, what, whose, which
1.______ make them happy was that they passed the exam.
2.______ I like most is your hairstyle.
3.______ the girl is remains a mystery.
4.______ money was lost is unknown.
5.______ book I shall choose hasn’t been decided.
总结连接代词的用法：
what指物，在从句中常可作_________________，表示“…的东西/样子/事情/所说的话”
who指人，在从句中常可作__________________，作宾语时可用whom
whose常用作__________
which可作__________________，表示“哪一个”
三、连接副词when, where, why, how
1.____ they leave the classroom hasn’t been decided.
2.____ it’s so strange is not known.
3.____ he keeps healthy is a secret.
总结连接副词的用法：
当主语从句中主语、宾语、表语具备，但是还是要表示疑问含义，可以判断句子中缺少状语，常常用相应的特殊疑问词引导，有when, where, how, why等，它们在表语从句中分别充当_____、_____、_____、_____状语，本身具有词义, 不可省略。
注意：疑问词+ever 也可引导主语从句，但不含疑问，往往含有强调作用，意思是“无论…”whoever 无论谁 whatever 无论什么 whichever 无论哪个 whenever 无论什
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