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。
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。