... 过去完成体 had done had been done 现在完成进行体 has been doing 过去完成进行体 had been doing ...
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Has been doing sth 一直做某事
But the diving team has been doing its work two times a week.
VOA: special.2009.08.25
The council on educational technology in MIT has Been doing that for MIT with the help from a couple Of consultants who've actually volunteered their time.
麻省理工教育技术委员会,在一些顾问的帮助下做着这项工作,这些顾问自愿牺牲他们的时间参与其中。
He wants to keep anticipating producing the great speech, ; which is exactly what the Lady has been doing; but on the other hand Milton's possessed of a competing desire to speak and to speak now -- to publish, to succeed, to consummate his talents.
他想要一直预先准备好伟大的演说,这也正是女士一直在做的;,但是另一方面,弥尔顿也有强烈矛盾地的欲望想要,演说--立即演说,想要出版,成功,最大程度发挥他的才能。
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