the attributive clause-定语从句。
1、概念：在复合句中修饰名词或代词的句子。
mary is a beautiful girl.形容词作定语。
mary is a girl who is beautiful.句子作定语，修饰girl, 叫做定语从句。
mary is a girl.
mary has long hair
mary is a girl who has long hair.
先行词。二、关系词判断步骤。
(1)首先，要看先行词。如果先行词是指人，关系代词可用 who,that,whom,whose，如果先行词指物，关系代词可用which或that；
(2)然后，要确定关系词在从句中的成分。请看下表。
(3)最后，定语从句谓语动词和先行词一致。
注：定语从句的时态不受主句的限制。
the woman who/that spoke at the meeting yesterday is my mother.（定语从句）
(先行词)（关系代词）
主句)the woman is my mother.
叙述客观事实用一般现在时)
从句)the woman (who/that) spoke at the meeting yesterday.
句中yesterday表示过去时间)
3、定语从句的用法：
(1)当先行词是物时， 用which 或that引导。
eg:these are the trees which/that were planted last year.
(2)当先行词是人时， 用who, whom,whose, that引导。
eg:the girl who/that has blue eyes is my sister.
四、who, whom, whose, that用法区别。
先行词为“人”，且在定语从句中作主语或宾语。做宾语时可省略。
eg:the man who is speaking at the meeting is a worker.
先行词) （关系代词）
the man is a worker.
分解。the man is speaking at the meeting.
做主语)the boy who is tall is tom.
eg:the boy is tom.（tall、strong、clever） the boy who is strong is tom
the boy who is clever is tom
指出先行词做什么成分）
1)the boy is tom. the boy is smiling
2)the boy is tom. the boy has a round face
3)the boy is tom. he sits in front of me
作定语从句的宾语，在口语和非正式文体中常用who代替，可以省略。
the woman whom/who they wanted to visit is a teacher.
the woman is a teacher.
分解。they wanted to visit the woman.（who做visit的宾语）
eg: the man is kind. everyone likes him.
the man (whom) everyone likes is kind.
宾语)1)the woman got the job. we saw her on the street.
2)the teacher will give us a talk. we met the teacher yesterday.
作定语从句的定语。whose 是代词的所有格形式， 它既可以代人也可以代物。
eg: i know the girl whose mother is a teacher.
i know the girl.
分解。the girl’s mother is a teacher.
相当于her,做定语)
h**e a rty
1)i saw a woman . her bag was stolen .
2)please show me the book . its cover is red.
that 可以作定语从句的主语和宾语。
注意： 关系代词（which who whom whose that）作动词宾语时可省略。
eg: the woman (whom/ that) they wanted to visit is a teacher.（做visit的宾语）
6)先行词前有the only，the very，the same，the last等词修饰时，只能用that。
例如：this is the same bike that i lost.
7)以who或which引导的特殊疑问句，为避免重复，只能用that。
例如：who is the girl that is crying？
1．先行词为that，those时，只能用which。
例如：what is that which is under the desk?
those are the books (which) i bought yesterday.
2．关系词前有介词时。
eg：this is the room in which he lives.
1).先行词是anyone, someone, those时，关系词使用who
eg:those who want to go to the great wall sign up here.
is there anyone who wants to go there?
2).在there be 句型中，先行词指人，关系词用who
eg:there is an old man who wants to see you.
there are many young men who are against him.
exercise:
1. i h**e a friendlikes listening to classical music.
2. yesterday emily was wearing the new dressi g**e her.
3. the man __leg broke in a match used to be a football player.
4. my parents live in a houseis more than 100 years old.
5. the boy with __john spoke is my brother.
6. kevin is reading a bookis too difficult for him.
7. is there anythingyou want to buy in the town.
___we can do is to study hard.
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