that比较级用法

看例句就可以知道

Ms. Shen's method of teaching is nothing like that of the teachers in my junior school.

比较结构中，that表示同类，不同物。

比较级中用that和those，而不用it或they，再如：The weather in Kunming is nicer than that in apples in this box are bigger than those in that box.