was playing是过去式还是将来,如果是过为何是加ing而不是加ed?

问题描述:

was playing是过去式还是将来,如果是过为何是加ing而不是加ed?

was doing 是过去进行时

was playing是过去进行时

确切说应该是过去进行时,过去式 是played,将来时是is playing,或者will play,is going to play等等