1. 主语+is + the + 最高级+ 名词 +(that)+ I have ever seen (known/heard/had/read)
Helen is the most beautiful girl that I have ever seen。海伦是我所看过最美丽的女孩。
Mr. Chang is the kindest teacher that I have ever had。张老师是我曾经遇到最仁慈的教师。
Yao Ming is the tallest basketball player that I have ever seen。
Liu Xiang is the most hardworking sportsman that I have ever seen。
2.Nothing is more important + than + to do sth. 没什么比做某事更重要的事。
例句：Nothing is more important than to keep fit。没有比保持健康更重要的事。
Nothing is more important than to potect our environment。没有什么比环保更重要的事。
Nothing is more important than to gain knowledge。没有什么比学习知识更重要的事。
3.There is no denying that + S + V (不可否认的……)
例句：There is no denying that Nothing is more important than to potect our environment.
There is no denying that Lin Zhiling is the most charming actress I have ever seen.