定语从句在限定性定语从句是修饰前面的名词,在非限制性定语从句中是修饰前面的句子,或短语
This is the room in which my father lived last year.这是父亲去年居住过的房子.
宾语从句好像不修饰什么,它是在句子中做宾语,才叫宾语从句
He told that he would go to the college the next year
他告诉我他下一年上大学.
I don’t know if there will be a bus any more.
我不知道是否还会有公交车.
Nobody knew whether he could pass the exam.
没人知道他是否会通过考试.