The beautiful woman is my teacher. beautiful 是形容词,作定语 The woman who is talking on the phone is my teacher 正在讲电话的那位妇女是我的老师,定语是 who is talking on the phone ,跟beautiful一样都是修饰teacher的,所以也是定语.但是是个句子,就是定语从句.定语从句放在所修辞词后面
什么是定语从句?