51.  attend on 照顾,侍候

52.  attribute…to... 把…...归于......

53.  back up 后退,支持

54.  be able to 能够

55.  be about to do sth  即将做某事

56.  be accustomed to  习惯于......

57.  be associated with  与……有关

58.  be aware of   意识到

59.  be capable of   有能力做

60.  be confined to  限制在,局限于

61.  be confined/be restricted  受……限制

62.  be dedicated to  奉献,献给

63.  be devoted to  贡献给

64.  be directed to 指向,针对

65.  be drawn to  被......所吸引

66.  be due to   由于,因此

67.  be exposed to 暴露在......下,接触......

68.  be fond of 喜爱

69.  be full of 充满

70.  be involved in 参与,参加

71.  be involved with 与……有关连

72.  be left to 留给......；由......来决定

73.  be limited to 限制在/限定在......

74.  be linked to/with something 与…连接

75.  be proud of 为......而骄傲

76.  be referred to 被提及

77.  be related to 与……有关

78.  be sick of 厌恶/讨厌......

79.  be suitable for 适合于

80.  be sure of 肯定......

81.  be tied by/with被……捆绑

82.  be tied to 束缚于,捆绑于

83.  be tired of 厌倦/厌烦......

84.  behind time 晚点

85.  better than 好于……

86.  beyond question 毋庸置疑

87.  break away 脱离,逃跑

88.  break down 损坏,分解,瓦解

89.  break into 闯入

90.  break off 断绝,结束

91.  break out 突发,爆发

92.  break through 突破

93.  break up 终止,结束,打碎

94.  bring about 产生

95.  bring forward 提出

96.  bring out 使出现;公布;出版

97.  bring up 提出，养育，呕吐

98.  by accident 偶然

99.  by all means 尽一切办法

100. by contrast 对比之下