引导定语从句时,when的先行词是否可以为抽象名词?
问题描述：
引导定语从句时,when的先行词是否可以为抽象名词?
答
One's care-free(无忧无虑的) childhood is soon over when he has to face going to school,which is especially true in mainland China(其实我并没有理解你的意思,只是根据我的语感给你一个大概的例句)...