问题描述： 否定句 This knife is for the Liu Tao. 1个回答 分类：英语 2014-10-24 问题解答： 我来补答 This knife is for the Liu Tao. 否定句：This is not for the Liu Tao. (is not 可缩写为isn't)这类变肯定句未否定句的题目,在be动词后加否定词not.如：I am a student. -----> I am not a student. 展开全文阅读
