Are you OK? Yes ,I am. No ,I'm not. Are you a student? Yes ,I am. No ,I'm not. Are you Gina Green? Yes ,I am. No ,I'm not. Is she your teacher? Yes ,she is. No ,she isn't. 注意大小写
are you ok? yes, i am. / no, i am not. are you a student? yes, i am. / no, i am not. are you Gina Green? yes, i am. / no, i am not. is she your teacher? yes, she is. / no, she isn't.
How are you? I'm OK(fine)./I'm sick. What are you? I'm a student/I'm not a student. What's your name? I'm Gina Green./I'm (another name). Who is she? She is my teacher./I don't know.