be abundant in富于，富有
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渴望
be aware of意识到
be bad at拙于，不善于
be based on根据，以为基础
be accustomed to习惯于
be active in积极于
be alive to发觉，感觉，对敏感
be angry with对...发怒
be buried in沉思，陷入，专心于
be busy忙着
be busy about忙于...
be careful to务必注意
be certain to一定，必然
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 anxious for急切盼望，渴望
be ashamed of为感到害臊
be about to即将，正要
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一定会，不得不
be burned out住所被烧光