1、,Alice 英语语法之肯定句变否定句 第一课时,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其它一切全照抄。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,简单句的句子结构1.主语+be+其它2.主语+动词+其它,备注：其中be里包括 am is are,聪明的小朋友们比一比看谁判断的准,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 apples.3.My sister cleans the duster.4.You have a red book.
2、5.Tim plays football with his brother.6.We go to school.7.He is my teacher.8.Jims dad walks to the office.9.Your mum cooks some food.10.They are students.,肯定句变否定句规则,肯定句 否定句 主语+be+其它 变成 主语+be+not+其它主语+动词+其它 变成 主语+dont+动词+其它主语（第三人称单数）+动词+其它 变成主语（第三人称单数）+doesnt+动词原形+其它,练习：,She is watching TV now We go to school on Sunday. His father works hard.Jacks mum is a nurse.The blue bird flies.I am a girl.The cat runs fast.You have a book. They catch cats. Amy is the best student in my class.,
