定语从句
1，定义：
复合句中修饰名词或代词的从句，它起定语的作用。    定语从句（  Attributive    限制性从句Clauses）在句中做定语，修饰一个名
词或代词，被修饰的名词，词组或代词即    先行词 。定语从句通常出现在先行词之后，由    关系词 （关系代词或关系
副词）引出。
2，定语从句的分类 ：
限定性定语从句：    对其所修饰的名词来讲是必不可少的
My uncle is a man who believes in discipline.
非限定性定语从句：    对其所修饰的名词只是一种补充说明，并不必不可少，    一般用逗号隔开。
I like to chat with John, who is a clever man.
3，先行词 ：指被定语从句修饰的    名词、代词 。
一般先行词出现在定语从句的前面。
4，关系词： 定语从句是由关系代词和关系副词引导，前者在从句中作主语、宾语或者表语，后者在从句中作状语。
关系代词    that    which    who    whom    whose    as
关系副词    when    where    why
5，关系词常有    3 个作用：
①连接作用，引导定语从句。
②代替先行词。
③在定语从句中担当一个成分。
限制性定语从句（无逗号）
一、 关系代词指人    who/whom/that    定语从句
1. The man ( who/that    stands there ) is my father.
分析 ：把 the man 代入定语从句中是充当    主语 ，即： The man stands there ,所以连接词可用    who 和 that
例句： The beautiful girl who/that wears blue coat is my girl.

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2. The man  （whom/who/that    they are talking  about） is my father.
分析 ：把 the man 代入定语从句中是充当    宾语 ， 即： They are talking about    the man  ,所以连接词可用    who, that    和
whom, 也就是说    whom    只能是当先行词代入定语从句中充当宾语的时候才可用。
例句： Do you remember the boy whom/who/that we caught last year ?
▲注：  在定语从句中做宾语，句中的    whom/who/that  还可省略 .
The man  （ they are talking  about） is my father.
而当把介词提前时，连接词只能用    whom
The man  （ about whom    they are talking ） is my father.
【即学即练    1】
填词练习
1.I have many friends, of _____________ some are businessmen.
2.I wonder the job of the girl _____ you fall in love with.
3.Miss Wang is a good teacher from ____________________ I have learned a lot.
4.In our factory there are 2,000 workers, two thirds of ____________________are women.
5.JK.Rowling is a great writer ______ has written many books like Harry Potter.
改错练习
1.The man came yesterday is our English teacher.
2.I know the student was praised at the meeting last week
3.No human being can be really happy whom is not giving or trying to give happiness to others.
4.Do you know the girl with who Li Ming is talking?
5.What have you done to the girl is talking the teacher?
二、关系代词指物    which/that
1. The farm    （ which/that    raises this animal ）    is here.
分析：把    farm 代入定语从句中是充当    主语，即： The farm raises this animal 。 所以连接词用    which/that.
例句： The place which/that hold the meeting is in the center of the city.
The year    （ which/that    I never forgot    ）  made many people die.
分析：把    year 代入定语从句中是充当    宾语 ，即： I never forgot the year.  所以连接词用    which/that.
▲ 注：若先行词在定语从句中做宾语则句中的    which/that    可省略 ，即：The year（ I never forgot ）made many people die.

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