(have/has been doing) 表示某一动作开始于过去某一时间,延续或重复地出现至今,或将继续延续至将来。 例:We have been working on this project for over a month now. 到目前为止,我们一直在处理那个项目,已经花了一个多月时间了。 5 一般过去时 ...
成人高考学位英语备考练习:非谓语动词 一、不定式 (一)基本结构 to do to be doing to have done to be done to have been done 学位英语真题汇编 1、Judging from his manners at the party, he does
11. Recently he has been refusing to do his homework, and instead insists on wasting his time watching DVDs and listening to foreign music. (page 38) 最近,他就是不做作业,而是把时间浪费在看DVD、听外国音乐上。 现在完成进行时 构成:have been doing sth...
22. We’re extremely proud of the research our R & D team has done. 我们为研发小组所取得的成果感到非常骄傲。 23. They have been doing some excellent work on the prototype...
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