51. arise from(=be caused by) 由…引起.
52. arrange for sb./sth. to do sth. 安排…做…
53. arrive on 到達(dá); arrive at 到達(dá)某地(小地方);得出,作出; arrive in 到達(dá)某地(大地方);
54. be ashamed of (=feel shame, guilt or sorrow because of sth. done) 以…為羞恥
55. assure sb. of sth. (=try to cause to believe or trust in sth.) 向…保證, 使…確信.

56. attach(to) (=to fix, fasten; join) 縛, 系 ,結(jié)
57. make an attempt at doing sth. (to do sth.) 試圖做…
58. attend to (=give one’s attention, care and thought)注意,照顧;attend on(upon)(=wait upon, serve, look after) 侍候,照料
59. attitude to/ toward …對(duì)…的態(tài)度.看法
60. attribute…to…(=to believe sth. to be the result of…)把..歸因于.., 認(rèn)為..是..的結(jié)果