百度作业网David did his homework just now.改为否定句 （写理由）
来源：学生作业帮 编辑：百度作业网作业帮 分类：英语作业 时间：2024/05/02 11:01:57
David did his homework just now.改为否定句 （写理由）
David did not do his homework just now 一般陈述句 改为否定句 助动词+ not 就行了 比如 you系动词的 就是系动词+not is not ,are not 没有系动词的 就是助动词do / did + not
再问： 答案是didn't do 吧，你说的不大清楚，明天要交滴，再清楚点la~
再答： didn't do 就是 did not do 的缩写啊 我给你简单列一下 1：句中有be动词时，在be动词后not。如：I am a student。（改为否定句） I am not a student。 2：如果句中没有be动词，找主语，如果主语是第三人称单数，在主语后加doesn't。如果主语不是第三人称单数，在主语后加don't。如：She has a book。（改为否定句 She doesn't have a book。 （注意：改否定句，句中无be动词，有have时。如果主语为第一人称，如 I We 等 have改否定句后还是have。如果主语是第三人称单数，改否定句后，has变have。看例子2. 第三人称单数如：she he 等等 3：句中有can ，may 在主语后直接加not。 当然 你还要注意时态的问题 过去式 要用 was/ were/did +not
再问： 答案是didn't do 吧，你说的不大清楚，明天要交滴，再清楚点la~
再答： didn't do 就是 did not do 的缩写啊 我给你简单列一下 1：句中有be动词时，在be动词后not。如：I am a student。（改为否定句） I am not a student。 2：如果句中没有be动词，找主语，如果主语是第三人称单数，在主语后加doesn't。如果主语不是第三人称单数，在主语后加don't。如：She has a book。（改为否定句 She doesn't have a book。 （注意：改否定句，句中无be动词，有have时。如果主语为第一人称，如 I We 等 have改否定句后还是have。如果主语是第三人称单数，改否定句后，has变have。看例子2. 第三人称单数如：she he 等等 3：句中有can ，may 在主语后直接加not。 当然 你还要注意时态的问题 过去式 要用 was/ were/did +not
David did his homework just now.改为否定句 （写理由）
He did his homework just now.(改为否定句） He ___ ___his homework
Jim did his homework last night.(改为否定句）
He did some reading just now.（改为否定句）
the boy did his homework yesterday改为否定句
He did his homework last night.(改为否定句)
he did the dishes just now改为否定句
31.He did his homework in the classroom.（改为否定句）
He did his homework in the classroom(改为否定句）
He did his homework in the classmete.（改为否定句）
He did his homework at home yesterday.(改为否定句）
Ben did his homework after school yesterday.(改为否定句）