My teacher is very happy改否定句

My teacher is very happy改否定句 My teacher is very happy改感叹句 This is my teacher.(改为否定句）怎么改? My teacher is ill 改肯定句,疑问句,否定句怎么改 He is very happy 否定句 All the students were very happy怎么改否定句 My,aunt,is,a,teacher.这句话改成否定句,该怎么改呀? Miss Li is my math math teacher.否定句怎样改? my teacher is very happy today 做什么成分 My math teacher is busy and very happy My English teacher speaks English very fast.变否定句 That is my brother.改否定句.