how should i trate with my brother?( he always try to show me he know more than me)?

My first reaction was to prove him wrong, but then I figured he'd only intensify his "know it all" attitude. So try this, rather than voice your knowledge when something comes up...keep quiet and then when he voices his opinion simply say "that's one way of looking at it, but here's what I've heard". Then voice your opinion. He can try to argue, but then he just looks stupid.

You do nothing

keep on ignorin him, he will find it borin n leave u alone soon, juz try to be meaner

Continue the same, concentrate in ur own work and just ignore him. U will see the result surely, though it may take some time(i have experienced the same, but following this for years, i got the result now)

AAAAH
HE'S SICK
IT HAPPENS WITH ME
FACE HIM ALWAYS WITH SOMETHING U R SURE U KNOW MORE THAN HIM
AND THEN U'LL FEEL BETTER

the best thing to do is ignore him. he'll soon see that he doesn't have an audience regarding his showing off and he'll seek it else where.. he thrives off of the attention he gets when he does show off..... just don't be around to give hime any. Hope that helps. good luck.

the first thing you should do is go back to english class...from your grammar, I'd probably agree with your brother...God forbid if he spells and talks like you...