I am a boy who just sing for soul这句话有语法错误吗?

I am sorry for letting you have a lonely birthday 这句话有语法错误吗 "I am a boy,age twelve."有没有语法错误? I am a girl who is studying in the classroom 这句话没语法错误吧? 这句话有什么语法错误吗：Li hua is a boy who has big eyes ,short yellow h Nobody knows who I really am 这句话有没有语法错误? you is a boy这句话有语法错误吗? 这句话有错吗?I am just waiting for you. I am not a Chinese but a Sinaian这句话有语法错误吗? If I am the one 这句话有语法错误吗? Either or I am right这句话有语法错误吗 I am loving sth.这句话有语法错误吗? Who am I ,I just forget who i am 求这句话的中文意思