5、法而后悔。典型例题---Youwerebraveenoughtoraiseobjectionsatthemeeting.---Well,nowIregret___that.A.todo B.tobedoing C. tohavedone D. havingdone答案:D。regrethavingdonesth.对已发生的事感到遗憾。regrettodosth.对将要做的事感到遗憾。本题为对已说的话感到后悔,因此选D。5ceasedoing/todo ceasetodo 长时间,甚至永远停做某事。ceasedoing 短时停止做某事,以后还会接着做。 Thatdepartmenth