现在进行时：The house is being built right now.
The desk is being repaired right now.
一般将来时：The paper will be done in next week.
The math problem will be worked out soon
一般过去时：The pants were washed just now.
The clothes were sold a moment ago.
过去完成时：The house has been built for a year.
The article has already been pulished in the newspaper.
过去进行时：The letters were being written at this time yesterday.
The meeting was being held at 4 o'clock yesterday.
希望能够帮到楼主