表示被动阿
被建造
用been+done表示
present perfect 为什么有些要加been?例如：has been built has sent
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相关问题
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has still been biult还是has been still built?
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when they will come has no been announce中为什么要加been?
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The first part of the plan has been accomplished.这里为什么要加been
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____ new bridge has been built over ___ Huangpu River.
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________new bridge has been built over________Huangpu River．
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Wenchuan Earthquake Museum has been built_____the peo
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Mr.Green has been dead for ten years为什么要用has been daed
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为什么有些要加been而有些不要加?
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Your service request has been sent to us.
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The plan has been gone throughzh中为什么要用been