动词16种时态

1. I do一般现在时
2. I am doing 现在进行时
3. I have done 现在完成时
4. I have been doing 现在完成进行时
5. I did 过去时
6. I was doing 过去进行时
7. I had done 过去完成时
8. I had been doing 过去完成进行时
9. I shall do 一般将来时
10. I shall be doing将来进行时
11. I shall have done 将来完成时
12. I shall have been doing 将来完成进行时
13. I should do 过去将来一般时
14. I should be doing 过去将来进行时
15. I should have done 过去将来完成时
16. I should have been doing 过去将来完成进行时

PS. 动词时态 9-12 用shall的几率一般很小, 可以用should代替.(spoken)