变成一般疑问句或否定句

题目

变成一般疑问句或否定句
1、This is an egg
2、That is an old clock
3、He's my teacher
4、I'm in Class 5

答案

1.This isn't an egg.
Is this an egg
2.Is that an old clock
That isn't an old clock.
3.Is he your teacher
He isn't my teacher.
4.Are you in Class
I am not in Class 5.
不明白的再问哟,请及时采纳,多谢!