[動詞]助動詞have的用法
1)have 過去分詞,搆成完成時態。例如:
He has left for London. 他已去了倫敦。
By the end of last month, they had finished half of their work. 上月未爲止,他們已經完成工作的一半。
2)have been 現在分詞,搆成完成進行時。例如:
I have been studying English for ten years. 我一直在學英語,已達十年之久。
3)have been 過去分詞,搆成完成式被動語態。例如:
English has been taught in China for many years. 中國教英語已經多年。
位律師廻複
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