來(lái)源:中考網(wǎng) 作者:匿名 2009-11-06 09:55:23
1)have +過(guò)去分詞,構(gòu)成完成時(shí)態(tài),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.
上月未為止,他們已經(jīng)完成工作的一半。
2)have + been +現(xiàn)在分詞,構(gòu)成完成進(jìn)行時(shí),例如:
I have been studying English for ten years.
我一直在學(xué)英語(yǔ),已達(dá)十年之久。
3)have+been +過(guò)去分詞,構(gòu)成完成式被動(dòng)語(yǔ)態(tài),例如:
English has been taught in China for many years.
中國(guó)教英語(yǔ)已經(jīng)多年。
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