观察下列句子：wemustwaitonthepavement./waitonthepavement.wemustn'teatordrinkintheclassroom/don'tdrinkoreatintheclassroom.含情态动词/的句子可以于肯定或否定的相互转换

Question

观察下列句子：we must wait on the pavement./wait on the pavement.
we mustn't eat or drink in the classroom/don't drink or eat in the classroom.
含情态动词_____/_____的句子可以于肯定或否定的___相互转换

Answer 1

含情态动词_must____/_mustn't____的句子可以于肯定或否定的do___相互转换