I think he must be a teacher,isn't he?I think you are a student,aren't you?I don't think she likes English,does she?I don't think she is a good student.is she?当主句的主语是第一人称时,反义疑问句和从句一致,并且将否定转移,比如I don't think she is a good student,is she?当主句主语是非第一人称,反义疑问句和主句一致。