在英语学习中，四六级考试是很多学生的重要目标之一。无论是四级还是六级，写作部分都是一个不可忽视的部分。为了帮助大家更好地准备写作部分，这里总结了一些常用的句式，这些句式不仅能够提升文章的表达能力，还能让文章更加流畅和自然。

一、开头句式

1. As is often the case, there exists a widespread concern over...

2. With the rapid development of ..., more and more people have realized that...

3. It is universally acknowledged that...

二、观点陈述句式

1. Some people believe that..., while others argue that...

2. From my perspective, I tend to agree with the former/ latter.

3. Personally speaking, I am in favor of...

三、因果关系句式

1. There are several reasons why this is the case, but the following two are the most important.

2. The reason why... is that...

3. As a result of...

四、转折对比句式

1. Although..., it does not mean that...

2. On one hand,...; on the other hand,...

3. Despite the fact that..., it is still true that...

五、总结结尾句式

1. In conclusion, it can be said that...

2. To sum up, we can safely draw the conclusion that...

3. All in all, I believe that...

以上句式可以在写作时灵活运用，但要注意避免过度使用，以免造成语言单调乏味。同时，结合自己的思考和实际经验，写出有个人特色的文章才是关键。希望这些句式能对大家有所帮助，在四六级考试中取得理想的成绩！