17. accuse…of…(=charge…with; blame sb. for sth.; blame sth. on sb. ; complain about)指控，控告
18. be accustomed to(=be in the habit of, be used to)习惯于。
19. be acquainted with(=to have knowledge of)了解;(=to have met socially)熟悉-
20. act on 奉行，按照…行动;act as 扮演;act for 代理
21. adapt oneself to(=adjust oneself to)使自己适应于
22. adapt…(for)(=make sth. Suitable for a new need)改编，改写(以适应新的需要)
23. in addition(=besides)此外， 又， 加之
24. in addition to(=as well as, besides, other than)除…外
25. adhere to(=abide by, conform to, comply with, cling to, insist on, persist in, observe, opinion, belief )粘附; 坚持， 遵循
26. adjacent(=next to, close to)毗邻的， 临近的
27. adjust……(to)(=change slightly)调节; 适应;
28. admit of (=be capable of, leave room for)…的可能，留有…的余地。
29. in advance (before in time)预告， 事先
30. to advantage 有利的，使优点更加突出地
31. have an advantage over 胜过
have the advantage of 由于…处于有利条件
have the advantage of sb.知道某人所不知道的事
32. take advantage of (=make the best of, utilize, make use of, profit from, harness)利用
33. agree with 赞同(某人意见)agree to 同意
34. in agreement (with)同意， 一致
35. ahead of 在…之前，超过…;ahead of time 提前
36. in the air 1)不肯定，不具体。2)在谣传中