011. a big headache 令人头痛的事情 2. a fraction of 一部分3. a matter of concern 焦点 4. a series of 一系列,一连串 above all 首先,尤其是5. absent from 不在,缺席 6. abundant in 富于7. account for 解释 8. accuse sb. of sth.控告9. add to 增加（add up to） 10. after all 毕竟,究竟11. agree with 同意 12. ahead of time / schedule 提前13. ahead of 在...之前（ahead of time 提前）14. alien to 与...相反 15. all at once 突然,同时16. all but 几乎;除了...都 17. all of a sudden 突然18. all over again 再一次,重新 19. all over 遍及20. all right 令人满意的;可以 21. all the same 仍然,照样的22. all the time 一直,始终23. angry with sb. at/about sth.生气,愤怒24. anxious about/for 忧虑,担心 25. anything but 根本不26. apart from 除...外(有/无)27. appeal to 吸引，申诉，请求28. applicable to 适用于 29. apply to 适用30. appropriate for/to 适当,合适 31. approximate to 近似,接近32. apt at 聪明,善于 33. apt to 易于 34. around the clock 夜以继日35. as a matter of fact 实际上 36. as a result(of) 因此,由于37. as a rule 通常,照例 38. as far as ...be concerned 就...而言39. as far as 远至,到...程度 40. as follows 如下41. as for 至于,关于 42. as good as 和...几乎一样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,无论怎样 56. at all times 随时,总是57. at all 丝毫(不),一点也不 58. at any rate 无论怎样,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,...
