赖世雄教你学英语语法
关系词
1-8：关系代词的省略
属于限定修饰（即关系代词之前无逗点）的形容词从句中，若关系代词为及物动词的宾语，则该关系代词可省略。若关系代词为介词的宾语，介词移至形容词从句句尾时，该关系代词也可以省略。
例：this is the boy whom i saw yesterday.
=this is the boy i saw yesterday.
（这是我昨天看见的男孩。）
i enjoy reading the book which i bought yesterday.
=i enjoy reading the book i bought yesterday.
（我喜欢读我昨天买的书。）
this is a question which you should pay attention to.
=this is a question you should pay attention to.
（这是一个你应该注意的问题。）
this is the house in which he lives.
=this is the house which he lives in.
=this is the house he lives in.
（这是他住的房子。）