1. 不定式的基本特征： 主动的，表将来的，表目的．
2. 不定式做主语时，谓语动词怎样在人称与数方面保持一致．
3. 可以用不定式做宾语的动词：want , like , wish, hate, prefer, hope, continue, manage, try, ask, offer, start,
forget, promise, mean, pretend,begin, decide, learn, agree, expect等．
4. 可以用wh-＋不定式做宾语的动词．
ask, decide, explain, forget, know, learn, remember, see, tell, show, teach, discuss, wonder, advise 等．
