I am a (student) 变复数

I am a (student) 变复数 i am a student.改成复数句 I'm a student变复数形式 I am a good student.改为复数形式 1.i am a student.(改为复数形式) i am a samrt student用复数怎么写 I was a student two years ago.变复数句 I am a student怎么变一般疑问句,是两种Am i a student?Are you a student吗? I am a student.的一般疑问句怎么变? I am a student. Yes,I am.{变复数} You are a student变一般疑问句是Are you a student?还是Am I a student?为