几种表目的的常见方法fficeffice" />
1. 不定式 to do sth
2. 介词结构 for sth; for doing sth; in doing sth; in order to
3. 状语从句 so that; in order that
求其异同,哪位NN有这方面的研究?谢谢了。 [em07]