我们还没做决定，所以今天先不开会。

Wǒmen hái méi zuò juédìng, suǒyǐ jīntiān xiān bù kāihuì.

We haven’t made a decision yet, so we won’t have the meeting today.

这件事太重要了，我们今天一定要做出决定。

Zhè jiàn shì tài zhòngyào le, wǒmen jīntiān yídìng yào zuòchū juédìng.

This matter is too important; we must make a decision today.

为了通过考试，他下决心每天多练习一个小时。

Wèile tōngguò kǎoshì, tā xià juéxīn měitiān duō liànxí yí gè xiǎoshí.

In order to pass the exam, he made up his mind to practice one extra hour every day.