be bad at拙于，不善于

be based on根据，以…为基础

be beside oneself忘乎所以

be badly off生活穷困

be bent on热恋于，一心想

be better off处境较好，情况好转

be born in出生于……

be bound to(do)一定会，不得不

be burned out住所被烧光

be busy with忙于…

be careful of爱惜，注意

be born of出生于…(家庭)

be buried in沉思，陷入，专心于

be busy(doing)忙着(做某事)

be busy about忙于……

be careful to(do)务必注意(做)

be certain to(do)一定(做)，必然(做)

be confident in对…有信心

be clever at擅长于

be composed of由…组成

be connected with与…有关

be covered with被…覆盖

be curious to(do)很想(做)

be derived from由…得到

be capable of能够

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(do)决心(做)

be different from与…不同

be divided into被分成

be eager to(do)急于要(做)

be equal to等于

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 glad to(do)乐于(做)，对…感到高兴

be good at(doing)善于，擅长

be grateful to感谢，感激