问题描述: My sister is going to buy a hat (变为否定句) 1个回答 分类:英语 2014-09-18 问题解答: 我来补答 My sister isn't going to buy a hat.如果不明白,请再问;如果对你有所帮助,请点击本页面中的“选为满意回答”按钮, 展开全文阅读