be busy with忙于
be careful of爱惜，注意
be born of出生于
be curious to很想
be derived from由得到
be capable of能够
be fed up厌烦
be m for适合，胜任
be free from没有...的，不受影响的
be frightened at受...惊吓
be divided by被除
be eager for渴望
be engaged in忙于，从事于
be famous for以著名
be filled with充满
be fond of喜欢，爱好
be friendly to对友好
be characterized by以为特征
be combined with与结合
be concerned about关心，挂念
be coupled with与...配合
be crowded with挤满，拥塞
be dependent on/upon取决于，依赖
be determined to决心
be different from与不同
be divided into被分成
be eager to急于要
be equal to等于
be good for适于，在期间有效
be identified as被认为是
be indispensable for对...必不可少的
be involved in包括中，被卷入
be kind enough to承好意，恳请