来源:新东方在线
发布时间:2016-03-21
5.4 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。
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