我们一直学汉语，直到晚上九点才下课。

Wǒmen yìzhí xué hànyǔ, zhídào wǎnshang jiǔ diǎn cái xiàkè.

We studied Chinese all the way until nine in the evening before class ended.

他从早上一直工作，直到中午才吃饭。

Tā cóng zǎoshang yìzhí gōngzuò, zhídào zhōngwǔ cái chīfàn.

He worked from morning straight through until noon before eating.

我一直等，直到他回家才放心。

Wǒ yìzhí děng, zhídào tā huíjiā cái fàngxīn.

I kept waiting and didn’t feel relieved until he came home.