过去进行时。表示过去某时正在进行的状态或动作。句式:主语+was/were+动词ing+其他。种类:1.表示过去某一时间内(正在)进行的动作。如:I was doing my homework at 9 o'clock p.m. last Sunday.2.表示一动作正在进行时,另一动作同时正在进行。
have的用法
一、have作助动词
主要变化形式:have,has,had
动名词/现在分词:having
1)have +过去分词,构成完成时态,例:
He has left for London.他已去了伦敦。
By the end of last month, they had finished half of their work.
上月末为止,他们已经完成工作的一半。
2)have + been +现在分词,构成完成进行时(现在完成时),例:
I have been studying English for ten years.
我一直在学英语,已达十年之久。
3)have+been +过去分词,构成完成时态的被动语态,例:
English has been taught in China for many years.
中国教英语已经多年。
二、have作普通动词形式
为表示习惯动作,do与have连用:
— Do you have earthquakes in your country? 你们国家地震吗?
— Yes,but we don’t have them very often. 有,但不经常。
have意指take(a meal)(吃),give(a party)(举行)等。
We have lunch at one.
我们1点钟吃饭。
They are having a party tomorrow.
他们明天举行聚会。
I hope you’ll have a good holiday.
我希望你愉快地度过假期。



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