must怎么读,must是什么意思

making some sentences using should/ had better/ must
"必须"在英语里是must,那么mustn't一定是"不必"吗?
我们必须停下来等一等! must 后面加动词直接加动词原形.
must be a record unit1是什么意思答:第一单元unit1hello,hi,怎么读
人教版2016版九年级英语全册unit8itmustbelongtoclara课件ppt