Unit 4 Discovering Useful Structures （定语从句） ppt课件-（2019）新人教版高中英语必修第一册.pptx

1、Unit 4 Natural Disasters 定语从句(Attributive Clause)Restrictive relative clauses with relative pronouns关系代词引导的定语从句I. Revision 定语: 对名词或代词起修饰限定作用的成分叫做定语定语。 定语从句:在主从复合句中，修饰句中某名词或代词，充当这一名词或代词的定语的句子，叫作定语从句定语从句。被修饰的名词或代词叫先行先行词词，引导定语从句的词叫作引导词引导词。 1.找到两个句子中相同的名词，用2句修饰1句的名词 2.将2句放于1句被修饰词之后，并用that连接1句和2句。 3.去掉2句

2、中相同的名词 合成的步骤：例子：The book is very interesting. I bought the book yesterday.The book (that I bought the book yesterday)is very interesting.The book that I bought yesterday is very interesting. 1.起连接作用(连接主从句，连接先行词和定语从句) 2.代替作用(代替从句中相同的名词=先行词) 3.在定语从句中担当成分 II. 引导词的功能： 引导词的分类： 引导词把先行词与定语从句连到一起，使之产生定语的关系，

3、称为关系词关系词。1.关系代词：that，which，who，whom，whose2.关系副词：when，where，why1. that 指人/物 在从句中作主语/宾语 The boy that is sanding near the door is my brother. I like the book that you lent to me. III. 关系代词引导的定语从句：I like the book.You lent the book to me.The boy is my brother.The boy is sanding near the door.2. which 指物

4、在从句中作主语/宾语 They planted the flowers which didnt need much water. The apple which you gave him is eaten by me.They planted the flowers.The flowers didnt need much water.The apple is eaten by me.You gave him the apple.3. who 指人 在从句中作主语/宾语 The teacher who went to see me yesterday is Mr. Li. The girl wh

5、o I talked with will go to Beijing.The teacher is Mr. Li.The teacher went to see me yesterday.The girl will go to Beijing.I talked with the girl.4. whom 指人 在从句中作宾语 The boy whom I met on the street yesterday is my brother.The boy is my brother.I met the boy on the street yesterday. 5. whose 指人/物 在从句中

6、作定语 He is the boy whose father is a doctor. This is the house whose windows face south.He is the boy.His father is a doctor.This is the house. The houses windows face south.关系代词关系代词先行词所指先行词所指关系代词在从句中所作成分关系代词在从句中所作成分that 指人/物在从句中作主语/宾语which指物在从句中作主语/宾语who指人在从句中作主语/宾语whom指人 在从句中作宾语whose指人/物在从句中作定语 找一找

7、：找相同的地方，重复交叠IV. 总结 ： 互换原则：1 that, which引导定语从句在从句中指物可互换 I like the book that / which you lent to me.2 that, who引导定语从句在从句中指人可互换 The boy that/ who is standing near the door is my brother.3 that, who,whom引导定语从句在从句中指人且作宾 语可互换 The boy who/whom/that I met on the street yesterday is my brother. V.牛刀小试：合并下列简

8、单句1. The news was surprising. He told us the news.The news that/which he told us was surprising.2. Do you know the man? He is talking to your teacher.Do you know the man that/who is talking to your teacher?3. Mr White is the person. I visited the person yesterday.Mr White is the person that/who/whom I visited yesterday.4. Is that the woman? The womans daughter is in my class.Is that the woman whose daughter is in my class?Thanks！