问题描述: there is a( book )on the desk 句型转化 改为否定句 一般疑问句 肯否回答 括号内提问 1个回答 分类:英语 2014-11-03 问题解答: 我来补答 there isn't a( book )on the desk Is there a( book )on the desk Yes ,there is.No,there isn'tWhat is there on the desk? 展开全文阅读