she is afraid of staying in that house alone.这句为什么要用 of 还有这句he is capable of doing anything.
问题描述：
she is afraid of staying in that house alone.这句为什么要用 of
还有这句he is capable of doing anything.
答
be afraid of
be capable of
都是固定短语。语言不是科学，实在人类慢慢积累形成的。有些东西就是约定俗成，无法解释。
答
be cable of 介词结构 有能力做某事
be afraid of doing sth对做某事担心
她害怕一个人呆在那座房子里
答
is afraid
答
这都是固定搭配呀
be afraid of 害怕……
be capable of 能够做……
答
区分be afraid to do sth 与be afraid of doing sth.be afraid to do sth.真正的意思是“害怕做某事”,也就是主语对做某事内心感到恐惧；be afraid of doing sth.表示主语内心里不情愿做某事,也可以说是不希望发生某...