一般过去时、I did my homework.
人称+动词的过去式
过去进行时、I was doing my homework.
人称+was/were+动词的进行时
一般将来时、I will do my homework.
人称+be going to/will +动词原形
过去将来时、I would do my homework.
人称+should/would+动词原形
现在完成时、I have done my homework.
人称+have/has+动词完成时
过去完成时 I had done my homework.
人称+had+动词完成时