定语从句当先行词时表示时间的名词时,如果在从句中作主语,宾语,表语,用关系代词which/that做状语,就用when来引导自己记的笔记看不懂了.= = 难道是我记错了?

"做状语"之前加个分号：如果是主宾表,用that/which; 如果是状语,用when.
The first season of a year is spring,which is also my most favorate season.
Spring 在后面的从句中是主语,用which引导.
The first season of a year is spring,when the trees begin to turn green.
Spring 在后面的从句中是状语（in spring）,用when引导.之所以要用when,就是因为这个从句如果单独写出来,spring 前面要加in,in spring 是这个句子的时间状语,自然要用when引导.