16. on account of (=because of=in that) 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 doing(=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
22. adapt oneself to(=adjust oneself to) 使自己适应于accomodate
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,persist 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;adapt
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.