第1个回答 2009-03-01
一般过去时:
I got up late this morning.
I was late for class yesterday.
she cried last night.
He went out for a walk.
They came back.
过去完成时:
I have finished my homework.
She has read five novels.
I have kept the book for two years.
They have been there for six years.
He has lived in china since he was ten.
现在进行时:
I am answering your questions.
I am teaching you.
You are being taught by me.
You are studying.
Your are doing your homework.