study的过去式和过去分词:时光流转,故事永恒

study的过去式是studied,过去分词也是studied。这两个形式在使用时需要注意以下几点:
> I studied hard for the exam.
> 我努力学习准备考试。
> He studied the history of China.
> 他研究了中国的历史。
> He is a studied man.
> 他是一个有学问的人。
> She is a studied scholar.
> 她是一位博学的学者。
> The studied material is very difficult.
> 被学习的材料非常难。
> The studied results are very important.
> 被研究的结果非常重要。