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
be concerned about 关心，挂念
be curious to (do) 很想(做)
be dependent on/upon 取决于，依赖
be determined to (do) 决心(做)
be different from 与…不同
be eager for 渴望
be eager to (do) 急于要(做)
be equal to 等于
be famous for 以…著名
be fond of 喜欢，爱好
be free from 无…的，摆脱了…的
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 good for 适于，在…期间有效
be grateful to 感谢，感激
be independent of 脱离…而独立，与…无关
be indispensable for 对…必不可少的
be interested in 对…感兴趣
be kind enough to (do) 承…好意，恳请
be late for 迟到
be likely to (do) 可能要，像是要