to后面什么时候是动词原形,什么时候加ing答:这些动词后面接的to用动词原形:want, wish, hope, manage, pretend, decide, learn, agree, expect, demand, long, ask, care, choose, dare, fail, offer, plan, prepare, promise, refuse, desire, happen, appear, intend, would like to, be said to to后用动名词:be/get used to ...