> This book is yours.

> That car is red.

一、基础结构例句

1. A cat sleeps on the sofa.

2. The dog barks every morning.

3. A bird chirps in the tree.

二、不同语境扩展

4. The teacher explains the lesson patiently.

5. A scientist conducts experiments every day.

6. The company launched a new product last month.

三、特殊主语示例

7. The sun rises at 6 AM.

8. The moon orbits the Earth.

9. A river flows through the valley.

这些例句展示了单数可数名词在一般现在时中作为主语时，谓语动词需加 -s 或 -es 的规则。