求英语大手帮我做下一个简单的英语短文改错.

求英语大手帮我做下一个简单的英语短文改错.
Of all my teachers, Mr. Smith is one who impresses me most. Although he is 40 and ordinary, but he looks very yong. And he is one of the most popular teacher in our school. compared with other teaches, he paid more attention to his way of teaching. He tries various ways make his classes interesting. In her opinion, we school not only know " what" but also understanding " why" . so, instead of giving us answers immediate, he encourages us to think by ourselves when he puts forward questions. Under his help, we have learned how to analyze and settle problems. how a wonderful world of " why" he leads us to!