把下列句子改成否定句：
问题描述：
把下列句子改成否定句：
1.my English name is Mary
2.She is an American girl
3.We are in Class 2,Grade 1
4.I have a good friend
5.She lives in london
6.We go to school by bike
7.His wife works in a school
答
1.My English name is MaryMy English name isn't Mary.2.She is an American girlShe isn't an American girl.3.We are in Class 2,Grade 1We aren't in Class2,Grade 1.4.I have a good friendI don't have a good...