1、stop to do sth 指停下来去做某事。
2、stop doing sth 指停止做某事。
3、stop sth 阻止……。
4、stop ...from ( doing) sth 阻止……做……。
5、He is tired ,he has to stop to have a rest 。
6、The students stopped talking when the teacher came into the classroom .
7、The police stopped the car .
8、We should stop the children from playing with fire .