is that of 的用法是什么?
问题描述：
is that of 的用法是什么?
例：A key process in interpersonal interaction is that of social comparison
不要只是一句话来解释 希望能有例句
答
that 指上文中出现的 process .eg .The population of China is larger than that of Japan .( that 指上文中的population） No pleasure equals that of a cool drink on a hot day.( that 指pleasure）...