“Good”和“bad”是两个尖锐的反义词，在惯用语中，也时时可见。下面便是些例子：

1. For one's own good：对某人有利

　 It is advisable for a person to learn a new language; it is for his own good.

2. In someone's good books : 令某人喜欢

　 Tom has changed for the better and is now in our good books.

3. Do someone good：对某人有好处

　 After a long period of hard work, it will do you good if you take a short holiday.

4. Do someone a good turn：帮助某人

　 I can never forget the day when David did me a good turn out of sheer kindness.

5. Give someone a good talking-to： 　 强烈批评某人

　 A woman customer complained to the manager and the manager gave the salesgirl a good talking-to.

6. Good riddance：大解脱

　 That nasty fellow has gone at last. Good riddance!

7. Have a good time：享受一番

　 Some old friends met at the weekend and they had a good time at the club.

8. Hold good：继续有效

　 Certain rules and regulations hold good at all times and places.

9. While the going is good：当情况尚好时

　 We can have some end-of -the-year bonus while the going is good.

10. Make good：发奋图强

　 As a dynamic young man, Mike is determined to make good and become somebody one day.

11. As good as done/ finished：几乎全部完成

　 The whole project is as good as done. We can proceed with the next phase of work now.

12. Through someone's good offices：透过某人的鼎力襄助

　 Through a senior officer's good offices, John got the permission to extend his visit.

13. The good old days：过去的好时光

　 When old friends meet, they like to chat about the good old days.

14. Bad blood：感情恶劣

　 There has been bad blood between the two in-laws.

15. Bad language：粗话

　 No bad language in the presence of children, please!

16. In someone's bad books：令人讨厌

　 Tom is late again. No wonder he is often in his boss's bad books.

17. Come to a bad end：悲惨收场

　 Some bad characters have been in and out of prison quite often. They will come to a bad end soon.

18. Give someone a bad/ hard time：虐待某人

　 If your boss tends to give you a bad time without any reason, you had better change your job.

19. Give something up as a bad job：停止做不可能的事

　 Janet started learning Mandarin but did not make good progress. Eventually, she gave it up as a bad job.

20. Go from bad to worse：越来越坏

　 The relations between the two neighbouring countries seem to have gone from bad to worse.

21. Make the best of a bad job：在逆境中尽力而为

　 Though Susie does not have good paper qualifications, she has made the best of a bad job and become a successful manager.

22. In a bad way：情况不佳

　 After repeated setbacks, he has been depressed and is in a bad way now.