are you OK肯定回答为：i am OK。否定回答为：i am not OK。are you OK为疑问句。肯定和否定回答均为陈述句。其中are为系动词，you为主语，OK为形容词做表语，是一个主系表结构的句子。主系表结构句型是英语中常见的句型之一，常见的还有主谓结构，there be结构等等。
肯定回Yes，I am.
否定回No，I am not.
否定回答 not too much.
肯定回答 yes I am fine
I am not fine.
I am feeling unwell
I feel troubled
I am all right.
肯定:I'm fine ， thank you. (一般）Yes， I‘m just fine， thanks. （more casual)否定:I'm not feeling very well.I'm a little dizzy.
否定回
Not good.
Not too good.
Not so good.
No.
Just so-so.
