43. as if 好像,防腐
44. as regards 关于,至于
45. as to 至于,关于
46. as usual 像平常一样,照例
47. as well as 除...外(也),即...又
48. as well 同样,也,还
49. ashamed of羞愧,害臊
50. aside from 除...外(还有)
51. ask for the moon异想天开
52. at a loss 茫然,不知所措
53. at a time 一次,每次
54. at all costs 不惜一切代价
55. at all events 不管怎样,无论如何
56. at all times 随时,总是
57. at all 丝毫(不),一点也不
58. at any rate 无论如何,至少
59. at best 充其量,至多
60. at first sight 乍一看,初看起来
61. at first 最初,起先
62. at hand 在手边,在附近
63. at heart 内心里,本质上
64. at home 在家,在国内