You are silly!什么意思,还有一段英语

You are silly!什么意思,还有一段英语
I write this essay don't have a lot of adieas.I think i will do it.I only believe me.But i have a sentence to you :you are veay silly.Do you know?Or you think you are smart .But you are wrong.You still think you do thing is right but this thing you are wrong .You wil regretful in this thing. I don't have any opinion.Only i'm very frustrate! 翻译过来,谢谢、!