在英语写作中，恰当使用一些短语和短句能够提升文章的流畅性和表达效果。以下是一些常用的短语和句子，供你在写作时参考：

1. 表示观点：

- In my opinion, ...

- From my perspective, ...

- As far as I am concerned, ...

2. 表示因果关系：

- Because of this, ...

- Due to this fact, ...

- Therefore, ...

- Consequently, ...

- As a result, ...

3. 表示转折：

- However, ...

- On the other hand, ...

- Nevertheless, ...

- Despite this, ...

- In contrast, ...

4. 表示举例：

- For example, ...

- Such as, ...

- To illustrate, ...

- Like, ...

- In particular, ...

5. 表示总结：

- In conclusion, ...

- To sum up, ...

- All in all, ...

- Overall, ...

- In summary, ...

6. 表示递进：

- Moreover, ...

- Furthermore, ...

- Additionally, ...

- What's more, ...

- Besides, ...

7. 表示时间顺序：

- Firstly, ...

- Secondly, ...

- Thirdly, ...

- Meanwhile, ...

- Afterwards, ...

- Eventually, ...

8. 表示条件：

- If so, ...

- Assuming that, ...

- Provided that, ...

- On condition that, ...

- In case, ...

9. 表示让步：

- Even though, ...

- Granted that, ...

- While it is true that, ...

- Despite the fact that, ...

- Although, ...

这些短语和短句可以帮助你构建更丰富、更有逻辑的文章结构。记住，在使用时要根据具体语境选择合适的表达方式，这样才能使你的文章更加自然流畅。希望这些小贴士能对你的英语写作有所帮助！