问题描述: There are two balls on the floor改为疑问句 1个回答 分类:英语 2014-11-05 问题解答: 我来补答 一般疑问句:Are there two balls on the floor?对 two 提问:How many balls are there on the floor?不明白的再问哟,请及时采纳,多谢! 展开全文阅读