一般现在时 do
eg:He plays the computer games every day.
一般过去时 did
eg:I lost my bike last Sunday.
一般将来时 will do/ be+doing/ be going to do
eg; I will visit my uncle in Beijing next week.
I'm going to Beijing tomorrow.
I'm going to visit my uncle in Beijing next week.
现在进行时 be doing
eg：I'm reading a book right now,plase turn down the music.
过去进行时 was/were doing
eg:I was doing homework when Tom entered the room.
现在完成时 have/has done
I've been to Paris there times.
Joe has finished his homework.
过去完成时 had done
We had learned 2000 English words by the end of last term.
此外还有：将来进行时、现在完成进行时等
