be supposed to do的否定为什么?

来源：学生作业帮助网 编辑：作业帮 时间：2024/06/04 11:32:16

be supposed to do的否定为什么?

sb.be supposed to do sth.
sb.be supposed not to do sth.

be not suppose to do .suppose引导宾语从句才否定前移.这里没引导宾语从句.

be supposed not to do sth.