My English teacher

I am looking forward to your corrections. Please help me improve my English. Thank youu so much.

My English teacher is Mr Dung. He is a nice and funny person. He is 30 now and (you could say 'but' instead of 'and' here if you want) he looks young and active. He is short but his voice is loud and clear.
He is very different to the other teachers. He has a special teaching method that makes his students feel interested when learning. In each of his lessons he not only teaches English grammar, new words, sentence structures, and how to speak English well, but he also talks about the life and how to live well. His students do love him so much.

While Mr Dung is a great teacher, he also is also a good bussiness man. He always knows how to earn money by using his wide and flexible knowledge. He sells fish sauce and perfume ( two different goods that are complete opposite!). It seems funny that He is a teacher and he sells fish sause and perfume. But he likes it. He loves seeing everything in many ways.

Everytime I meet him and listen to his lessons, I feel that the life is more meaningful. I learn so much from him. Best wishes to him.

You speak very well!