for the prosperity of our country ,
for the happiness of parents ,
for the promising future of ourselves ,
we should study hard .
应该用3 个for ,表示强调。这中句式在演讲稿中很合适的
先用谷歌翻译,自己再改改
"For the motherland prosperity, in order to give his parents happy... a bright future, we must study hard."
for the prosperity of our country, for the happiness of our parents.... for the great expectation of our future, we must exert all our strength to learn.
Prosperous, glad for parents for motherland …Give a bright future of oneself, we will study hard.