1)现在时:
I do
you do
he/she/it does
we/you/they do
2)现在时:
I am doing
you are doing
he/she/it is doing
we/you/they are doing
3)将来时:
(所有主语)will do
4) 过去时:
(所有主语)did
5)现在完成时:
I have done
you have done
he/she/it has done
we/you/they have done
以上是基本时态,复杂的时态变化在do/doing/done前面的动词.