How to write the composition "A little thing reminds me-"?

One day, my family of three went for a walk in the West Coast Park next to Guazhu Lake. On the way, an uncle who walked in front of us threw an unlit cigarette end to the side of the road and into the lawn, and walked on as if nothing had happened. As soon as I saw it, I strode forward quickly, stamped out the cigarette butts with my shoes, and then walked on with peace of mind. It's not once or twice that I stamp out cigarette butts on the roadside with my shoes. Basically, I will step on those cigarette butts I see, just in case. As the saying goes, "A single spark can start a prairie fire". Stamping out a cigarette butt is equivalent to putting out a big fire. It's early autumn, and the grass is yellow, dry and flammable. Cigarette butts and sparks can turn a lawn into ashes. When I was walking, I once saw a lawn with a layer of black on it. I guess it may be caused by littering cigarette butts.

Picking up scraps of paper and stepping on cigarette butts may be just trivial things in the eyes of some ordinary people. It's these little things. If you can't do it, you may miss many important events. For example, the selection of national health cities. Perhaps it is because of such a little scraps of paper and a few burning cigarette butts that we are not judged and it is too late to regret it.

There are also touching things. Once, while I was doing my homework, I looked out of the window and saw an old man over 60 years old, with vegetables bought in one hand and several plastic bottles in the other. From time to time, he bent down to pick up the garbage and threw it into the trash can. Seeing this scene, I can't help but feel shocked that such a 60-year-old man still has such virtue. This spirit is really admirable. Old people who are nearly old can do it, not to mention our younger generation.

We clean up garbage, and someone makes garbage. Like some people spitting everywhere; Someone threw confetti; Some people throw cigarette butts ... others make rubbish while riding. Vomiting due to carsickness, and some people stick their heads out of the window to vomit, which not only makes the appearance of the car ugly, but also may endanger their lives because of the sudden braking of the car.

Therefore, we should start from every little thing around us, from stepping on an unfinished cigarette end, from picking up a piece of paper scraps thrown on the roadside, and from now on!