现在 | play plays |
is am playing are |
has have played |
has have been playing |
过去 | played | was were playing |
had played | had been playing |
将来 | shall will play |
shall will be playing |
shall will have played |
shall will have been playing |
过去 将来 |
should would play |
should would be playing |
should would have played |
should would have been playing |