have 有哪几种用法

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have 有哪几种用法
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have 有哪几种用法
have 有哪几种用法

have 有哪几种用法
助动词have的用法
1)have +过去分词,构成完成时态,例如:
He has left for London.他已去了伦敦.
By the end of last month,they had finished half of their work.
上月未为止,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,例如:
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,构成完成式被动语态,例如:
English has been taught in China for many years.
中国教英语已经多年.
还有吃的意思,有的意思.
如:I have lunch at 12 o'clock.
I have a book.