You should stop haying a look before you cross the street..（haying应该是笔误,原词应该为having）
这句话错在“stop having”这里,应该改为“stop to have”
You should stop to have a look before you cross the street.
过马路前你应该先停下来看一看（路况）.
stop to do 停下来去做某事
stop doing 停下正在做着的某事