What _______(happen) here?There is blood on the floor.这里happen为舍要搭配has,直接填happen不行吗?
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![What _______(happen) here?There is blood on the floor.这里happen为舍要搭配has,直接填happen不行吗?](/uploads/image/z/12882147-51-7.jpg?t=What+_______%28happen%29+here%3FThere+is+blood+on+the+floor.%E8%BF%99%E9%87%8Chappen%E4%B8%BA%E8%88%8D%E8%A6%81%E6%90%AD%E9%85%8Dhas%2C%E7%9B%B4%E6%8E%A5%E5%A1%ABhappen%E4%B8%8D%E8%A1%8C%E5%90%97%3F)
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What _______(happen) here?There is blood on the floor.这里happen为舍要搭配has,直接填happen不行吗?
What _______(happen) here?There is blood on the floor.
这里happen为舍要搭配has,直接填happen不行吗?
What _______(happen) here?There is blood on the floor.这里happen为舍要搭配has,直接填happen不行吗?
HAPPEN有瞬时性
从语法上要不填is happening 要不就是has happened
从句意上 应该是 has happened
因为动作已发生,用一般过去时 happened 或现在完成时 has happened。
http://zhidao.baidu.com/question/328481982.html
因为动作在过去已经发生
what happened曾发生过什么?
what's happened已经发生了什么?
what's happening正在发生什么
事情已经发生在过去了,