They have been working for two hours.
現(xiàn)在完成進(jìn)行時(shí).
表示截止現(xiàn)在,他們已經(jīng)工作2小時(shí)（并仍在繼續(xù)工作）.
They have worked for two hours.
現(xiàn)在完成時(shí).
表示他們已經(jīng)工作了2小時(shí),但不見(jiàn)得仍在繼續(xù)工作.
他們已經(jīng)工作兩個(gè)小時(shí)了.They have been working for two hours.They have worked for two hours.哪個(gè)
他們已經(jīng)工作兩個(gè)小時(shí)了.They have been working for two hours.They have worked for two hours.哪個(gè)
他們已經(jīng)工作兩個(gè)小時(shí)了.
They have been working for two hours.
They have worked for two hours.
哪個(gè)對(duì),兩個(gè)句子有何區(qū)別.
他們已經(jīng)工作兩個(gè)小時(shí)了.
They have been working for two hours.
They have worked for two hours.
哪個(gè)對(duì),兩個(gè)句子有何區(qū)別.
英語(yǔ)人氣：756 ℃時(shí)間：2019-08-22 10:17:44
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