23. at least 最少  at most 最多

22. at present 目前

21. have an opportunity to do sth. 有机会做某事

   have a chance of doing sth. 有机会做某事

   如：I have an opportunity to go to Beijing.       I have a chance of going to Beijing.

20. learn (sth.) from sb.  向谁学习(什么) 如：

 Jim learnt English from his English teacher. 吉姆向他的英语老师学习英语

19. both…and…　+动词复数形式

如： Both Jim and Li Ming play  bastketball.

18. keep sb/ sth. ＋形容词　使某人/某物保持….　如：

　　We should keep our city clean.我们应该保持我们的城市干净。

18. agree 同意　反义词 disagree不同意 动词

   agreement 同意　反义词 disagreement 不同意　名词

   agree with sb   agree to do sth

17. the other day 前几天

16.  take the test 参加考试

pass the test 通过考试

fail a test  考试失败

15. be strict with sb. 对某人严厉　如：

   Mother is strict with her son. 妈妈对她的儿子很严厉。

   be strict in sth          be strict with sb in sth