帮我写出时态结构```和各造一个句子`谢谢`

一般过去时

一般现在时

现在完成时

过去完成时

一般将来时

一般进行时

过去进行时

1.I was a student.

2.I am a student.

3.I have been to shanghai.

4.I had have a beautiful life since 3years ago.

5.I well go to school tomorrow.

6.I am going shopping now.

7.I was doing homework .