I want to do something for them, so I study very hard to get the highest mark in my class.

我想要为他们做一些事情，因此我很努力学习，为了在班级上拿到最高分。

youdao

I will study very hard.

我会用功读书。

youdao

I study very hard.

我学习很用功。

youdao

Many parents push their children very hard to study these days.

现在很多父母都强迫自己的孩子努力学习。

学习靠自觉 - SpeakingMax英语口语达人

Gabby is someone who has obviously made a very careful study of what makes her happy, and worked hard to bring those elements into the forefront of her life, so I was curious to hear what she had to say on the subject of happiness.

FORBES: How Would I Behave If I Were Happy

Researchers at academic medical centers who study the disease say that so-called chronic Lyme, or post-Lyme, is very rare, hard to detect and not treatable with any further doses of antibiotics.

FORBES: Lyme Inc.