英语里面一共有八大种时态，是四个“时”（现在时、过去时、将来时、过去将来时）与四个“态”（一般式、进行式、完成式、完成进行式）对应组合而成，如下所示：
一般现在时 I do
现在进行时 I'm doing
现在完成时 I have done
现在完成进行时 I have been doing
一般过去时 I did
过去进行时 I was doing
过去完成时 I had done
过去完成进行时 I had been doing
一般将来时 I will do
将来进行时 I will be doing
将来完成时 I will have done
将来完成进行时 I will have been doing
过去将来时 I would do
过去将来进行时 I would be doing
过去将来完成时 I would have done
过去将来完成进行时 I would have been doing
