1.abide by(=be faithful to ; obey)忠于；遵守。
2. be absent from…. 缺席，不在
3. absence of mind(=being absent-minded) 心不在焉
4. absorb(=take up the attention of)吸引…的注意力（被动语态）be absorbed in 全神贯注于…近be engrossed in ; be lost in ; be rapt in ;be concentrated on ; be focused on ; be centered on
5. (be) abundant in(be rich in; be well supplied with) 富于，富有
6. access(to) （不可数名词）能接近，进入，了解
7. by accident(=by chance, accidentally)偶然地，意外。 Without accident(=safely) 安全地
8. of one’s own accord(=without being asked; willingly; freely)自愿地，主动地
9. in accord with 与…一致. out of one’s accord with 同….不一致
10. with one accord (=with everybody agreeing)一致地
11. in accordance with (=in agreement with) 依照，根据
12. on one’s own account 1) 为了某人的缘故，为了某人自己的利益 2) (=at one’s own risk) 自行负责 3) (=by oneself)依靠自己 on account 赊账；on account of 因为; on no account不论什么原因也不；of …account 有…..重要性.
13. take…into account(=consider)把...考虑进去
14. give sb. an account of 说明, 解释（理由）
15. account for (=give an explanation or reason for) 解释，说明
16. on account of (=because of) 由于，因为
17. on no account(=in no case, for no reason)绝不要，无论如何不要（放句首时句 子要倒装）
18. accuse…of…(=charge…with; blame sb. for sth. ; blame sth. on sb. ; complain about) 指控,控告
19. be accustomed to (=be in the habit of, be used to)习惯于.
20. be acquainted with(=to have knowledge of) 了解; (=to have met socially ) 熟悉
21. act on 奉行,按照…行动; act as 扮演; act for 代理
22. adapt oneself to(=adjust oneself to) 使自己适应于
23. adapt…(for) (=make sth. Suitable for a new need) 改编, 改写(以适应新的需要)
24. in addition (=besides) 此外, 又, 加之
25. in addition to(=as well as, besides, other than)除…外
26. adhere to (=abide by, conform to, comply with, cling to, insist on, pe rsist in, observe, opinion, belief ) 粘附; 坚持, 遵循
27. adjacent(=next to, close to) 毗邻的, 临近的
28. adjust..(to) (=change slightly)调节；适应；
29. admit of (=be capable of, leave room for) …的可能，留有…的余地.
30. in advance (before in time) 预告，事先