做错了就应该要道歉！

Zuòcuò le jiù yīnggāi yào dàoqiàn!

If you make a mistake you ought to apologize.

虽然他道歉了，但是她还是很生气。

Suīrán tā dàoqiàn le, dànshì tā háishì hěn shēngqì.

Although he apologized, she is still very angry.

我昨天态度不好，今天想跟你道歉。

Wǒ zuótiān tàidu bù hǎo, jīntiān xiǎng gēn nǐ dàoqiàn.

I had a bad attitude yesterday, I want to apologize to you today.