【名词用法】

作主语，English is useful.

做定语，paper tigers, work places

做宾语，She learns Chinese hard every day.

做表语，Tom is my good friend.

做宾语补足语， They chose the boy monitor.

【既是可数又是不可数名词的意义不同】

Work工作-a work著作，glass玻璃-a glass玻璃杯，paper纸-a paper报纸，文件，试卷

Tea茶-a tea一种茶，wood木头-a wood小树林，room空间-a room房间

非复数：physics, maths, politics, news

表示由两部分构成的东西，如：glasses(眼镜)trousers，clothes等，若表达具体数目，要借助数量词 pair(对，双);suit(套);a pair of glasses;wo pairs of trousers等。当物质名词表示该物质的种类时，可数。例如：

This factory produces steel.(不可数)

We need various steels.(可数)

当物质名词表示份数时，可数。例如：

Our co untry is famous for tea. 我国因茶叶而闻名。

Two teas, please. 请来两杯茶。

其它有关实例如下：

The girl was washing greens.(绿色蔬菜)

Our returns are not as good as before.(收益，回报)

Please hand in your papers at once.(论文)

Mary lost her good looks when she was old.(相貌)

【名词动词化】

1. Don’t bother me.

2. Don’t sir me!

3. The dog nosed the door open.

4. He mouthed down a piece of cake