写给学生会的建议信英语如下：
Dear the Students'Union，
As is well-known to us all，the spring is coming．（高分句型一）The breeze is gently brushing our face．The blue sky is above us．After raining，the flowers are blooming in the garden．The living beings start to grow．Everything is full of vigor and fragrance．The best season of this year，we can't miss it and we will love it．
The spring is coming，and it brings green to the trees and grass，pink and yellow to the flowers．The birds start to sing，the farmers begin to plant crops in the fields．In spring，everywhere is full of hope．People usually say that a good beginning is half done，while spring is the beginning of a year．
So we should appreciate it and make the most use of it．As students，we should make every effort to study hard and make our life colourful．（高分句型二）In a word，I hope that our life will be better and better in the future．
Yours
Peter Smith