31, at most , 至多,不超过
32, at no time , 从不,决不
33, at present , 目前,现在
34, at the cost of , 以...为代价
35, all means , 尽一切办法,务必
36, account for, 说明(原因等)
37, allow for, 考虑到
38, arrive at, 达成，得出
39, ask for, 请求，要求
40, aim at, 瞄准，针对
41, appeal to, 呼吁，要求
42, ask after, 询问，问候
43, attach to, 附属于，隶属于
44, a few, 有些，几个
45, as a matter of fact, 实际情况，真相
46, a little, 一点，稍微，一些，少许
47, by accident , 偶然
48, by far , 最,...得多
49, by itself , 自动地,独自地
50, by means of , 用,依靠
51, by mistake , 错误地,无意地
52, by no means , 决不,并没有
53, by oneself , 单独地,独自地
54, by the way , 顺便说说
55, by way of , 经由,通过...方法
56, for the present , 暂时,目前
57, for the sake of , 为了,为了...的利益
58, for the time being , 暂时,眼下
59, back and forth , 来回地,反复地
60, before long , 不久以后