请问这里为什么要用动词不定式?he was afraid to leave his home.改成 he was afraid left his home.
问题描述：
请问这里为什么要用动词不定式?
he was afraid to leave his home.改成 he was afraid left his home.
答
不可以.
固定用法：be afraid to do sth 害怕做某事