27. Each man has his limitation.

　　28. Don’t put the cart before the horse.

　　29. A friend is easier lost than found.

　　30. A good medicine tastes bitter.

　　31. Things done can not be undone.

　　辯論中常用的句型：

　　1. There is no doubt that…

　　1. It is obvious/clear that…

　　2. As is known to all,…

　　3. (It’s) no wonder…

　　He didn’t work hard and no wonder he lost his job.

　　4. It goes without saying that…

　　It goes without saying that healthy men are happier than sick men.

　　5. What is more important, …

　　6. I am convinced that….

　　舉例表示法：

　　1. For example, the people’s economic status has been greatly improved.

　　2. For instance, the economic status of the people has been improved.

　　3. Let’s have an example. TV sets, refrigerators and recorders have become household necessities.

　　1. …is a case in point.