求助(变化句子)

先变否定再变一般疑问句并回答： That English boy is mu friend I am his cousin Her first name is Sally These two girls are my sisters Dave and tom are brothers Those two dictionaries are red Hus father is 40 years old She is at school Gina's family photo is nice I'm an English teacher He is my Chinese teacher Tom and Mary are my classmates

解题思路： 见下
解题过程：
先变否定再变一般疑问句并回答：
That English boy is mu friend
That English boy isn’t my friend.
Is that boy your friend?
Yes, he is.
I am his cousin
I’m not his cousin.
Are you his cousin/
No, I’m not.
Her first name is Sally
Her first name isn’t Sally.
Is her first name Sally?
Yes, it is.
These two girls are my sisters
These two girls aren’t my sisters.
Are these two girls your sisters?
No, they aren’t.
Dave and tom are brothers
Dave and tom aren’t brothers.
Are Dave and tom brothers?
Yes, they are.
Those two dictionaries are red
Those two dictionaries aren’t red.
Are those two dictionaries red?
No, they aren’t.
Hus father is 40 years old
His father isn’t 40 years old
Is his father 40 years old?
Yes, he is.
She is at school
She isn’t at school.
Is she at school?
No, she isn’t.
Gina's family photo is nice
Gina's family photo isn’t nice.
Is Gina's family photo nice?
Yes, it is.
I'm an English teacher
I'm not an English teacher.
Are you an English teacher?
Yes, I am.
He is my Chinese teacher
He isn’t my Chinese teacher.
Is he your Chinese teacher?
No, he isn’t.
Tom and Mary are my classmates
Tom and Mary aren’t my classmates.
Are Tom and Mary your classmates?
Yes, they are.
如对本题解答还有疑问，可在“继续讨论”中留言，我收到后会尽快给你答复。谢谢你的配合！匆忙中难免有疏漏，请多包涵哦。我是菁菁草老师，随时为你答疑解惑!
英语的诀窍就是熟练，办法是多背多练。加油吧！Do your best and you can do the best!
最终答案：略