He must be fun.何如改成一般疑问句?Must he be fun 还是Is he fun?

问题描述:

He must be fun.何如改成一般疑问句?Must he be fun 还是Is he fun?

Must he be fun?
一般疑问句是将be动词、情态动词或者加助动词,这里用情态动词,所以将must提前.Is he fun?是错误的.