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have been doing是什么时态
have been doing是现在完成进行时,表示从过去一直持续到现在,并且现在并未停止,还将持续到将来。have done现在完成时,到现在为止已经完成。
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have been doing 是什么时态
He had been studying the meaning of this proverb.(他一直在努力学习它)3、未得结果:We had been studying wh...
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would have been doing是什么时态
would have been doing是过去将来完成进行时,多用于虚拟句。表示“我现在本来应该做……”例如:If it wasnt because of you, I would have been playing with my dog at home.如果不是因为你,我现在应该正在家里...
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have been doing是什么时态
have been doing是现在完成进行时,表示从过去一直持续到现在,并且现在并未停止,还将持续到将来。have done现在完成时,到现在为止已经完成。 例句:I have been waiting ...
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would+have+been+doing是什么时态?
would+have+been+doing是过去将来完成进行时。多用于虚拟句。表示“我现在本来应该做……”例如:If it wasnt because of you, I would have been playing with my dog at home.如果不是因为你,我现在应该正在家里跟小狗...
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has been doing是什么时态
(1)They have been living in this city for ten years.They have lived in this city for ten years.他们在这...
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have been doing sth是什么时态
have been doing sth是现在完成进行式时态。have:vt.有;持有;占有;由…组成;显示出,带有(性质、特征)。been:v.曾经;曾经到过(某地)。doing:n.所做的事;发生的事;所作所为。There have been ...
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i have been doing是什么时态
I have been doing this course for a year.我学了这个课程已经有一年了。I have been doing some historical research.我一直在进行史学研究。
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was been doing是什么时态
时态根据句意判断,例如:have been doing是现在完成进行时,表示从过去一直持续到现在,并且现在并未停止,还将持续到将来。have done现在完成时,到现在为止已经完成。
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would have been doing是什么时态
What would have been the impediments to doing this?这样做会遇到什么阻碍呢?There have been many changes in recent years.近几年发生了许多变化。A new sy...
is been doing什么时态
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