考研英语历年真题常考固定搭配33
be bad at 拙于，不善于be badly off 生活穷困
be based on 根据，以……为基础
be bent on 热恋于，一心想
be beside oneself 忘乎所以
be better off 处境较好，情况好转
be born in 出生于……
be born of 出生于……(家庭)
be bound to (do) 一定会，不得不
be buried in 沉思，陷入，专心于
be burned out 住所被烧光
be busy (doing) 忙着(做某事)
be busy with 忙于……
be busy about 忙于……
be careful of 爱惜，注意
be careful to (do) 务必注意(做)
be certain to (do) 一定(做)，必然(做)
be capable of 能够
be confident in 对……有信心
be characterized by 以……为特征
be clever at 擅长于
be combined with 与……结合
be composed of 由……组成
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