高级句子是高中英语学习中必须掌握的一部分，无论是作文还是阅读理解中，都能够更好的展现自己的思想和语言表达能力。在这里，我们来一起积累几个经典高级句子。

1. In addition to…, it is also worth mentioning that…
除了……之外，还值得一提的是……

例如：In addition to the beautiful scenery, it is also worth mentioning that the local cuisine is a must-try.

2. Not only…, but also…..
不仅……而且……

例如：Not only did she finish the task ahead of schedule, but also received praise from her boss.

3. It goes without saying that…
不言而喻的是……

例如：It goes without saying that good communication skills are necessary for any successful business.

4. As far as I am concerned, …...
就我而言，……

例如：As far as I am concerned, music is an essential part of my life.

5. It is no exaggeration to say that…
毫不夸张地说……

例如：It is no exaggeration to say that the invention of internet has significantly changed our lives.

6. There is no denying that…
不可否认的是……

例如：There is no denying that social media has a huge influence on our daily lives.

7. In the final analysis, …...
归根结底，……

例如：In the final analysis, the key to success lies in perseverance and hard work.

8. By and large, …...
总的来说，……

例如：By and large, the education system in China still has room for improvement.

以上是一些高级句子的例子，通过学习这些高级句子，我们可以更好地书写作文，更准确，更流畅地表达自己的想法。然而，我们也需要注意一些语法和词汇的点，例如用逗号连接两个句子时，需要注意逗号的使用、主谓一致、形容词和副词的用法等。

最后，通过不断积累高级句子，我们可以慢慢提高自己的英语水平，更好地理解和掌握英语语言。