fromEnglish Grammar Today
We use the -ingformafterstopto indicate that an action or event is no longer continuing:
It’sstoppedraining. Let’s go for a walk.(It was raining, but not any more.)
We’vestoppedusingplastic bags in supermarkets. We take our own bag with us now when we go shopping.
Weuse theto-infinitive afterstopto indicate that someone stops doing something in order to do something else:
On the way to Edinburgh, westoppedtolookat an old castle.(We were travelling, then we stopped our journey in order to look at the castle.)
Westopped to havesomething to eat.