should的用法：

should用來提出建議和忠告，后邊加動詞原形，否定句直接在should后邊加not.

例如：I think you should eat less junk food.

我認為你應該少吃垃圾食品。

She drives a lot and she seldom walks. So I think she should walk a lot.

她經常開車，很少走路。所以我認為她應該多走路。

Students shouldn’t spend too much time playing computer games.

學生們不應當花太多的時間玩計算機游戲。

學習向別人提建議的幾種句式：

(1)I think you should…

(2)Well, you could…

(3)Maybe you should …

(4)Why don’t you…?

(5)What about doing sth.?

(6)You’d better do sth.

★★練一練★★

用should或shouldn’t填空

1. I can’t sleep the night before exams.

You ______ take a warm shower before you go to bed.

2. Good friends ______ argue each other.

3. There is little milk in the glass. We _______ buy some.

4. They didn’t invite you? Maybe you ______ be friendlier.

5. I am a little bit overweight. So I think I _______ do exercises every day.

答案：1. should 2. shouldn’t 3. should 4. should 5. should