The lawyer seldom wears anything other than a suit ____ the season.

问题描述:

The lawyer seldom wears anything other than a suit ____ the season.
为什么用whatever 而不是whichever呢?不是有季节这个限定范围(4个)吗?顺便帮忙比较一下二者的差别.

whatever 是指任何一个季节,相当于泛指的意思,随便哪一个季节
whichever是具体指哪一个,四个季节中的一个