be busy(doing)忙著(做某事)
be busy about忙于...
be careful t0(do)務(wù)必注意(做)
be certain to(do)一定(做)，必然(做)
be confident in對(duì)…有信心
be clever at擅長(zhǎng)于
be composed of由…組成
be connected with與…有關(guān)
be covered with被…覆蓋
be curious t0(do)很想(做)
be derived from由…得到
be capable of能夠
be characterized by以…為特征
be combined with與…結(jié)合
be concerned about關(guān)心，掛念
be coupled with與...配合
be crowded with擠滿，擁塞
be dependent on/upon取決于，依賴
be determined to(do)決心(做)
be different from與…不同
be divided into被分成
be eager to(do)急于要(做)
be equal to等于
be fed up厭煩