阅读下列句子，注意contain在句中的意思。

1. The bottle contains five glasses of water.

2. The hall can contain two hundred people.

3. Sea water contains salt.

【用法归纳】

contain vt. 容纳，包含（指一个整体包括的内容，侧重"内有"的意思）

【拓展】

include当"包含"讲时表示一个整体由几个部分组成，侧重被包括者只是整体的一部分。

试比较：

The bill includes tax and service．

Try to avoid food which contains a lot of fat．

【即学即练】 用contain和include的正确形式填空。

1. The museum ______ a number of original artworks.

2. The price ______ postage charges.

3. The dictionary ______ nine maps, ______ two Chinese ones.

Key: 1. contains 2. includes 3. contains; including

behave "表现"

【寓词于境】

阅读下列句子，注意behave在句中的意思。

1. She behaves as if she were a child.

2. She doesn't know how to behave in public.

3. How is your new car behaving?

【用法归纳】

behave v. 表现；表现得体，有礼貌；（机器等）运转

【更多用法】

behave 当"表现得体，有礼貌"讲时，常和反身代词连用。

【例句】

He knows how to behave himself in the company.