I who am a teacher want to cry or I who is a teacher want to cry?

I who am a teacher want to cry or I who is a teacher want to cry? 求翻译并列复合句I am a teacher and you are students who study very hard. I am a teacher的否定形式 I am a teacher 变为一般疑问句 I am a teacher.(改为复数) Jack or I am a teacher是什么意思 I am a teacher 一般过去时：一般疑问句： I am a teacher 变为否定句 i am a teacher 改为疑问句 英语I am a teacher前一句是什么 Who are you?与What does you do?有何区别选那个回答：I am a new teacher . I am a teacher.划线部分提问teacher划线 I am who I am for a reason. I am who I am for a reason. IF I AM A TEACHER对吗?是WERE还是AM? Are you a teacher?Yes,I'am.Are you a teacher?Yes,I'am. I am a teacher.中,I主语,am谓语,teacher表语,a是什么成分? I am so good a teacher还是I am a so good teacher?哪一个正确?为什么?