Question

这句话有语法错误吗？请帮忙分析一下。

Mr.Li tells the students to don't play in the classroom.

Answer 1

to don't改为not to

追问

能说明一下为什么吗？

追答

tell sb to do sth
tell sb not to do sth
固定句型

Answer 2

Mr.Li tells the students not to play in the classroom.

动词不定式的否定形式作宾补
这是tell sb to do句型 ,动词不定式的形式是在不定式前面直接加not