第一句:疑问——Is that a pencil?否定:That isn't a pencil.
第二句:疑问:Is Chen Jie a girl?否定:Chen Jie isn't agirl.
第三句:疑问————Are they students?否定:They aren't students.
第四句:疑问:Is he tall and strong?否定:He isn't tall and strong.
第五句:疑问:Is it a banana?否定:It isn't a banana.
祝你学习快乐!^o^
is that a pencil? that isnt a pencil.
剩下的类似,疑问句be动词提前,否定句be动词加not。