Teachers recommend parents_their children under 12 to ride bicycles to school for safety.not allow do not allow mustn't allow couldn't allowB答案不是强调么?
问题描述：
Teachers recommend parents_their children under 12 to ride bicycles to school for safety.
not allow
do not allow
mustn't allow
couldn't allow
B答案不是强调么?
答
recommend sb to do sth
否定则在前面加not
则是recommend sb not to do sth 固定用法
希望能够帮到楼主