it must be in the living room.( 改为反问疑问句 )it must be in the living room,isn't it
问题描述:
it must be in the living room.( 改为反问疑问句 )it must be in the living room,isn't it
为什么是isn't it而不是Must't it
答
must是程度副词
这里的动词是be 因为前面肯定所以后面是否定 isn‘t