She is a teacher than whom no one is more patient怎么解

题目

She is a teacher than whom no one is more patient怎么解
这句词典上看到的 可我怎么也看不明 貌似定语从句 可又不像

答案

She is a teacher than whom no one is more patient
她是个比谁都耐心的老师.
是定语从句
从句than whom no one is more patient修饰teacher
这里than只是作比较的介词,如果将 than whom 后置就很清晰.