你标记错了英文

You write wrong.

你说错了用英文写：You're wrong

You are wrong (too direct, can be offensive)I'm sorry but you are wrong. (a bit polite)I think you might be mistaken. (more diplomatic) If i were not wrong, your information could be incorrect.(In english, be careful who are you speaking with. If you just do a direct translation, you could offend the other party and get yourself in trouble.)

你一定记错了! You must have got it wrong!

你写错了You make a mistake.You write wrong.