21. account for (=give an explanation or reason for) 解释, 说明

a) The suspect couldn't account for his time that night.

b) 嫌疑犯不能说明那天晚上他的时间安排

22. accuse sb of…(=charge sb with…; blame sb for…; blame sth on sb ; complain about) 指控,控告

a) They were accused of unlawful assembly.

23. be accustomed to doing sth (=be in the habit of doing sth, be used to sth)习惯于

a) I am not accustomed to being interrupted.

24. be acquainted with 了解; 熟悉

a) He was well acquainted with the literature of France, Germany and Holland.

25. act on 履行;

a) Both the Israelis and the Palestinians failed to act on recent UN resolutions. 以巴双方均未能履行联合国近期的决议。

26. act as 担当;

a) Act as an agent to record the accounts.

27. act for 代理

a) He acted for Smith while he was ill.

28. adapt oneself to <situation> (=adjust oneself to)使自己适应于

a) He adapted himself to the cold weather.

b) 他适应了寒冷的天气。

29. adapt…(for) (=make sth Suitable for a new need) 改编, 改写(以适应新的需要)

a) A graded reader is a story which has been adapted for people learning to read or learning a foreign language.

30. in addition 此外, 又, 加之

a) The Met Office Web site provides regional reports, a shipping forecast and gale warnings. In addition, visitors can download satellite images of the UK.