划出下列各句中的关系代词或关系副词,并判断他们在定语从句中充当的成分
划出下列各句中的关系代词或关系副词,并判断他们在定语从句中充当的成分
① I don't know the name of the teacher whom I saw in the computer room
②I sat next to the girl whose name was Alice
③She seems to be a person that can't pay attention to one thing for long
另外怎么判断关系代词/关系副词充当的成分?