现在分词的被动式用法
问题描述：
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?
答
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...