英语语法之肯定句变否定句.doc

(完整版)英语语法之肯定句变否定句英语语法之肯定句变否定句一、肯定句变否定句口诀给句子分析它，看它结构是哪个主加be后加not 其他一切全照抄主加动词主重要dont doesnt 来帮忙dont doesnt 中间夹doesnt doesnt 最特殊第三人称单数全靠它二、简单句的句子结构1. 主语+be+其他2. 主语+动词+其他备注:其中be里包括（am is are） 判断下列各句是主语加be还是主语加动词1. I am a girl.2. I like singing。3. We go to school every day.4. They are good friends.5. He works hard.6. She likes playing with toys.7. My mother watches TV every day.8. You are a beautiful girl.9. Tom is playing football on the playground。10. Bill does his homework after supper。三、肯定句变否定句规则肯定句主语+be+其他 变成 主语+be+not+其他主语+动词+其他 变成 主语+dont+动词+其他主语（第三人称单数）+动词单三+其他 变成主语（第三人称单数）+doesnt +动词原形+其他练习1. She is watching TV now。2. We go to school on Sunday.3. His father works hard.4. Jacks mother is a nurse.5. The cat runs fast。6. They like reading books.7. My grandpa gives me a hot dog。8. Tom often walks to school。9. I have a doll.10. It is eating fish.