This was the most beautiful thing I have ever seen

问题补充：

This was the most beautiful thing I have ever seen中文

答案：

这是我见过的最美的东西了

======以下答案可供参考======

供参考答案1:

the most beautiful place，所以要用关系代词 that 来引导(当然也可省略不用This is the place where I have ever seen 不对，应将 where 改为