be acquainted with与…相识，熟悉
be afraid of恐怕，害怕，担忧
be angry at因某事生气
be anxious about担心，为…担忧
be anxious to(do)渴望(做)
be aware of意识到
be bad at拙于，不善于
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2015呼和浩特职称英语考试报名网http://www.kaozc.com/En/neimenggu/hhht/