蛋糕我吃了半，剩下的留给你。

Dàngāo wǒ chī le bàn, shèng xià de liú gěi nǐ.

I ate half the cake; the rest is for you.

他等了半个小时，她还没来。

Tā děng le bàn ge xiǎoshí, tā hái méi lái.

He waited for half an hour, but she still hadn't come.

这杯咖啡我才喝了一半就凉了。

Zhè bēi kāfēi wǒ cái hē le yībàn jiù liáng le.

I only drank half of this coffee before it got cold.