1. and：表示并列关系，用于连接两个相似或相关的概念。

- 示例：I like reading and writing.

2. but：表示转折关系，用于引出与前面陈述相反的情况。

- 示例：He is very smart but sometimes makes silly mistakes.

3. or：表示选择关系，用于提供两种或多种可能性。

- 示例：Do you want tea or coffee?

4. so：表示因果关系，用来表达结果。

- 示例：It was raining heavily, so we stayed at home.

5. because：同样表示因果关系，但强调原因。

- 示例：She didn’t come to school because she was ill.

6. although：表示让步关系，尽管存在某种情况，但并不影响另一事实。

- 示例：Although it was cold, he went swimming.

7. if：引导条件状语从句，表示假设条件下的情况。

- 示例：If it rains, the game will be canceled.

8. when：引导时间状语从句，表示某个动作发生的时间点。

- 示例：When I arrived, the meeting had already started.

9. while：表示同时发生的动作，通常强调对比或延续性。

- 示例：While I was studying, my brother was playing games.

10. since：表示原因或时间起点，强调从某个时间点开始。

- 示例：Since last year, he has been living in Beijing.

以上连词在中考英语试题中经常出现，理解并正确运用这些连词对于提高英语写作和阅读能力至关重要。希望同学们通过练习和总结，能够在考试中灵活运用这些连词，取得理想的成绩！