句子中含有be动词和情态动词的句子,反义疑问句怎么变?

这样的说法很少见.表示猜测预料的时候有五种通常表达法.
有迹象预料推测be going to do疑问否定都用be be not
无迹象规律习惯性预料will do疑问否定都用will won't
80%以上很可能猜测must do(be)疑问用can 否定用can't
50%左右猜测,有可能,may do或could do,疑问否定用could couldn't
30%也许大概猜测might do疑问否定用ought oughtn't


he must be a teacher.
Can he be a teacher?
no,he can't be a teacher.
he must be a teacher,can't he?
他很可能是个教师,难道不可能吗?
有时这样的问句常可根据内容来反问
he must be a teacher,isn't he?
他很可能是教师,难道不是吗?


这种题的做法,只要牢记12个特殊助动词do be have can may must will shall used ought needn't daren't如果句中有,一般直接使用,如果没有就借用do.
但要注意may许可,否定用mustn't不许
must很可能,否定用can't不可能
must必须,否定用needn't没必要
may有可能,否定用couldn't可能不
have to do,否定用don't have to do
其他的基本直接使用就可以了

he can‘t be a teacher，can he？

he can be a teacher.can't he?