考研作文中，常用的句式包括：
1. 开篇引入句式：
- To begin with, it is widely acknowledged that...
- It is a well-known fact that...
- In the first place, there is no denying that...
2. 比较和对比句式：
- On the one hand, ..., on the other hand, ...
- While ..., it is also true that ...
- In contrast, ..., in comparison, ...
3. 强调句式：
- It is of great importance that...
- What is most significant is that...
- Undoubtedly, ...
4. 原因解释句式：
- The reasons for this phenomenon are as follows...
- There are several reasons accounting for this issue, including...
- This can be attributed to the following factors...
5. 结论句式：
- In conclusion, ...
- To sum up, ...
- It can be safely said that...
6. 转折句式：
- However, ...
- Despite this, ...
- On the contrary, ...
7. 强调转折句式：
- Even though ..., ...
- In spite of ..., ...
通过运用这些句式，可以使考研作文结构更加清晰，内容更加丰富。
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