我要努力学习。

I am going to study hard.

我要努力学医。

I'm going to study medicine hard.

我要努力学习中国文化。

I will try my best to learn Chinese culrure .

他总是鼓励我要努力工作。

He always encourages me to work hard.

现在我要努力,装进铜线。

So I will now make an attempt to load down the copper wire.

我要努力使下一刻比此刻更好。

I will always strive to make the next hour better than this one.

我要努力学习科学越来越难了。

I will study hard science increasingly difficult.

我要努力工作，并努力做到为终考试！

I have to work hard and achieve effort for final exam!

我要努力学习。

I want study hardly.

那么我要努力学习，并且我要获得一个笛子十级证书。

Then I will study hard and try to obtain the tenth level certificate of playing bamboo flute.