Word: 保证 (bǎozhèng) to pledge

他保证不再撒谎。

Tā bǎozhèng búzài sāhuǎng.

He promised not to tell lies again.

他保证过会来却没有来。

Tā bǎozhèngguo huì lái què méiyǒu lái.

He promised to come, but he didn't come.

他向我保证会还钱。

Tā xiàng wǒ bǎozhèng huì huán qián.

He promised me to pay back the money.

我们保证不会再做了。

Wǒmen bǎozhèng búhuì zài zuòle.

We promise you that we'll never do it again.

我们保证我们不会再做了。

Wǒmen bǎozhèng wǒmen búhuì zài zuòle.

We promise you that we'll never do it again.

我保证它不会再发生。

Wǒ bǎozhèng tā búhuì zài fāshēng.

I promise it won't happen again.

我保证我会做的。

Wǒ bǎozhèng wǒ huì zuò de.

I promise that I will do it.

我保证我会把你送进牢里。

Wǒ bǎozhèng wǒ huì bǎ nǐ sòng jìn láo lǐ.

I promise that I will send you to prison.

我保证我会来。

Wǒ bǎozhèng wǒ huì lái.

I promise that I'll come.

我保证火车会准时来。

Wǒ bǎozhèng huǒchē huì zhǔnshí lái.

The train will arrive on time without fail.

我向你保证。

Wǒ xiàng nǐ bǎozhèng.

I give you my word.

我和你保证。

Wǒ hé nǐ bǎozhèng.

I gave you my word.

是的，我们保证。

Shì de, wǒmen bǎozhèng.

Yes, we promise.