英语四级口语考试中可能会用到一些常用句型和表达。以下是一些建议：

1. 开场白：

- Good morning/afternoon, my name is ... and I am from ...

- Nice to meet you.

2. 引入话题：

- Today, I would like to talk about ...

- I'd like to discuss ...

- Let's talk about ...

3. 表达观点：

- In my opinion, ...

- I believe that ...

- As far as I'm concerned, ...

4. 列举原因和支持观点：

- One reason why I believe this is that ...

- Another reason is ...

- Additionally, ...

5. 举例：

- For example, ...

- A good example of this is ...

- Let me give you an example.

6. 提出建议：

- Perhaps, we should ...

- Maybe, it would be a good idea to ...

- I suggest that ...

7. 询问对方观点：

- What do you think about this?

- How do you feel about ...?

- Would you agree with me on this?

8. 总结：

- In conclusion, ...

- To sum up, ...

- In brief, ...

9. 结束语：

- Thank you for listening.

- That's all for my part.

- Thanks for your attention.

注意，实际考试时，要根据话题和内容灵活运用这些句型，不要盲目背诵。同时，保持流利度和自然语调也很重要。