As the saying goes,roses given,fragrance in hand.In our daily life,we will meet with a lot of trouble.
One possible version
So it is necessary for us to help those who are in trouble.
I still remember I helped one of my classmates with his English when we were in the first term of Junior Eight.Li Hua,one of my classmates,was not good at English while I did well.One day,he asked me to help him.So from then on,whenever he had problems,he would ask me,and I was patient to explain them to him.Slowly,his English improved with my help.At the same time,I found my English improved too.
Actually,helping others is helping ourselves.