例一：
There are so many subjects at school.We learn Chinese,maths,English,music,PE and so on.My favorite subject is PE.Because I like sports very much.There are two PE classes every week.
Then I can play football and play basketball with friends in PE class.Playing balls is good for our health,it keeps us fit.I feel very happy when we have PE classes.
例二：
We have many subjects at school,such as Chinese,maths,English,music and PE.My favorite subject is PE,because PE is very interesting.We have many activities in PE class.We can play basketball and badminton.When we had P.E.we are very happy.And our PE teacher is very funny,we all like him.so ,i like PE best.