1. the+est+ noun+(that)+subject+ever+seen (know/heard/had/seen, ...
Helen is the most beautiful girl I have ever seen. Helen is the most beautiful girl I have ever seen.
Second, there is nothing more +er than to+v.
Nothing is+more+adjectives+thanks to+v.
Nothing is more important than getting an education. Nothing is more important than getting an education.
Three. It goes without saying ... obviously ... = obviously, ... needless to say/obviously. ......
It goes without saying that in order to be healthy, everyone should keep a balanced diet.
Needless to say, for the sake of health, everyone should keep a balanced diet.
I believe ... I believe ... ...
I am convinced that if we insist on reciting some useful sentences, we can improve our writing level.
I am convinced that as long as we insist on reciting some useful sentences every day, we can improve our English writing.
It's easy to prove ... it's easy to prove. ......
It is easy to prove that nothing is more precious than time.
It is easy for us to prove that time is the most precious.