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。
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。
2021-09-09
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。
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。