(六)关系代词：用来引导定语从句的代词叫关系代词,参见后面的定语从句。
1.关系代词who 、which、 that 、whom 等,将定语从句和主句连接起来。英语中的关系代词一方面在从句中担任一定的成分,另一方面又起连接作用。
如：The student who is drawing a picture is in Grade One.(正在画画的学生是一年级的)
2.关系代词who / whom指人,如果作从句的宾语,则有时省略。如：
Do you know the man who is wearing a red hat? (你认识那个戴着红帽子的男人吗?)
3.关系代词which 指物,如果作从句的宾语,则有时省略。如：Have you found the book which you lost several days ago?(你找到几天前丢失的那本书了吗?)
4.关系代词that既可指人也可指物,如果作从句的宾语,则有时省略。如：Can you see the man/dog that is running along the river bank ?(你看得见顺着河跑的男人/狗了吗?)
