陈述句变为否定句(共2页).doc

精选优质文档-----倾情为你奉上陈述句变为否定句1. 如果陈述句中有be动词（am , are, is, was, were）,就在be动词后面直接加not I am a student. → I am not a student. You are sad. → You are not sad.She is a good girl. → She is not a good girl.He is a good boy. → He is not a good boy.Yesterday was Monday. → Yesterday was not Monday.The students were busy yesterday. → The students were not busy yesterday.2. 如果陈述句中有情态动词（can must should may will等），就在情态动词后面直接加not I can swim. → I can not swim. You will go to the park. → You will not go to the park.3. 如果陈述句中没有be动词也没有情态动词（就是实意动词），就需要借助助动词（do, does, did）来帮助否定。

①当句中的动词是原形时，加don’t I like English. → I do not like English. You have dinner. → You do not have dinner.②当句中的动词是第三人称单数时，加doesn’t ，再加动词原形 She likes singing. → She doesn’t like singing. She does her homework. → She does not do her homework. (特例)③当句中的动词是过去式时，用didn’t，加动词原形We had a great time during our holidays.→ We did not have a great time during our holidays. I went to school yesterday.→ I did not go to school yesterday.4、陈述句中的some在否定句中应改为any 如：There are some students in the classroom. There are not any students in the classroom.专心---专注---专业。