1．更喜欢：prefer v. → preference n．； prefer to → have a preference for
2．重要：important adj. → be of importance
3．讨论：discuss v. →make a discussion n.
4．倾向于：tend v. → tendency n．； tend to → have a tendency to
5．缺乏：lack v. → have a lack of
6．需要：need v. → have a need for
7．决定：decide v. → make a decision
8．解释：explain v. → give an explanation of
9．学习：learn/study v. → learning/study n.
10．强调：emphasize v. → put an emphasis on
11．创造：create v. →creativity n. creative adj.
12．调查：investigate v. → investigation n. investigative/investigatory adj.
13．各种不同：various adj. → variety n.
14．重大：significant adj. → be of significance
15．贡献：contribute v. → make a contribution to
16．比较：compare v. → make a comparison
