我的努力学习使我获得了一次一等奖学金和三次三等奖学金

I got a first class scholarship and 3 third class scholarship because of my hard work.

我认为应该强调得的奖学金，因此我把金学金放在了前面，楼主觉得呢？

I study hard to enable me to get a first-class scholarship and three third-class scholarship .

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My hard work crowns me not only three third class scholarships but also one first class scholarship.