Experience is the best teacher.

Thanks to experience的英文，

I had a very unusual experience on Sunday.
It was a bright,sunny day.Our school closed for the day.And my friends and I swam together happily.It was very interesting.Then I went to the biggest and the deepest water area of the swimming pool.Next a terrible thing happened.You can imagine how strange it was.My leg had a problem and I couldn’t swim.I was very fearful.It was very dangerous.Then my friends swam to me and saved me.He saved my life.I was out of danger and my friend becomes my liberator.I said:Thank you!Thank you very much! My friends and I walked home together in silence.
This is my unusual experience.It’s very terrible.I couldn’t forget it.