家里的每个人都有自己的工作，我的爸爸是个工程师，工作非常辛苦，但他很努力。

In my family, everyone has their own job. My dad is an engineer who work very hard. But he tries to do it best.

youdao

虽然他很努力，但他考试没有及格。

Although he worked hard, he failed in the exam.

《新英汉大辞典》

虽然他很努力，但他没有能够通过驾驶员考试。

Hard as he tried, he didn't pass the driving test.

youdao

虽然他年幼，但他工作很努力。

Although he is young, he works very hard.

youdao

虽然他年事已高，但他工作还是很努力。

Though he is old, he works hard.

youdao

我努力地照顾他，但他的耳朵很聋。

I try to look after him, but he's very deaf.

youdao

即使他们很努力，但他们不会成功。

Try as they may, they will never succeed.

youdao

即使他们很努力，但他们不会成功。

Try as they may, they will never succeed.

youdao