助動(dòng)詞have的用法
5.4 助動(dòng)詞have的用法 | ||
? | 1)have +過去分詞,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,已達(dá)十年之久。 3)have+been +過去分詞,構(gòu)成完成式被動(dòng)語態(tài),例如: English has been taught in China for many years. 中國(guó)教英語已經(jīng)多年。 |