i'm now a good students in my ciass.but you don't

konw英语改错

梅酒

I'm now a good student （或one of the good students) in my ciass, but/although you don't konw it.

Now I 'm a good student in my class,but you'll never know.(现在我是班级里的好学生，但你从不知道） 再看看别人怎么说的。