现在分词的被动式用法Corn originated in the New World and thus was not known in Europe until Columbus found it _________________(被种植）in Cuba.key:being cultivated.译文：玉米来自新大陆,因此在哥伦布发现它在古巴被
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现在分词的被动式用法Corn originated in the New World and thus was not known in Europe until Columbus found it _________________(被种植）in Cuba.key:being cultivated.译文：玉米来自新大陆,因此在哥伦布发现它在古巴被
现在分词的被动式用法
Corn originated in the New World and thus was not known in Europe until Columbus found it _________________(被种植）in Cuba.
key:being cultivated.
译文：玉米来自新大陆,因此在哥伦布发现它在古巴被种植之前,欧洲人并不知道她．
我的疑问：哥伦布发现它时,它不是已被种植了吗?为什么不用完成式呢?
现在分词的被动式用法Corn originated in the New World and thus was not known in Europe until Columbus found it _________________(被种植）in Cuba.key:being cultivated.译文：玉米来自新大陆,因此在哥伦布发现它在古巴被
find doing 这是搭配 If you find someone or something in a particular situation,they are in that situation when you see them or come into contact with them.
They found her walking alone and depressed on the beach...
She returned to her east London home to find her back door forced open...
Thrushes are a protected species so you will not find them on any menu.
总之 就是表示状态 就是了 种植是过去的 没有必要用完成 完成是特别表示对当今的影响