19. act on 奉行,按照…行动; act as 扮演; act for 代理

18. be acquainted with(=to have knowledge of) 了解; (=to have met socially) 熟悉

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

16. 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)

15. on account of (=because of) 由于,因为.

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

13. give sb. an account of 说明, 解释 (理由)

12. take…into account(=consider)把...考虑进去

11. 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.

10. in accordance with (=in agreement with) 依照,根据