例句：
两个月前他停止做某事而弹钢琴。
He stopped to play piano two months ago.
它是为某人做某事的权力。
It is the power to do something for someone.
这个就是你的动机——你做某事的理由。
This is your motivation — your reason for doing it.
这个就是你的动机——你做某事的理由。
This is your motivation -your reason for doing it.
不要为做某事而做，要因为你想做它才做。
Don't do something for the sake of doing it, do it because you want to.