在哪种情况下需要用到动词不定式?答:Would you be so kind as to carry the luggage for me? c)不定式常用来修饰形容词,构成下列词组:be able to, be afraid to, be apt to, be bound to, be certain to, be easy to, be eager to, be fit to, be likely to, be ready to, be sure to, be unable to, be unwilling to, be...