youtoo是语法错误吗

并非语法错误。通常在嘱咐他人时，能够讲“you too”，朋友之间相互表达祝福时也能够运用“you too”。

相关介绍：

You're too intelligent to fall for his flattery. 意思是：你如此聪慧，不会被他的谄媚所迷惑。

You're too young to be contemplating retirement. 意味着：你年纪尚轻，考虑退休还太早。

You're too modest! 即：你过于谦逊！

You're too ingenuous. 意为：你太天真了。

You're too thin. You're not eating properly 意思是：你太瘦了。你的饮食不太恰当。