我用了很多时间去学习中文。

Wǒ yòng le hěn duō shíjiān qù xuéxí Zhōngwén.

I used a lot of time to study Chinese.

因为你很忙，没有时间和我看电影。

Yīnwèi nǐ hěn máng, méiyǒu shíjiān hé wǒ kàn diànyǐng.

Because you're busy; you don't have time to watch movies with me.

我大部分时间都在公司。

Wǒ dàbùfen shíjiān dōu zài gōngsī.

I spend most of my time at the office.