有人敲门了！

Yǒu rén qiāomén le!

Someone is knocking at the door!

你别再敲我的头了！

Nǐ bié zài qiāo wǒ de tóu le!

Stop hitting my head!

他敲了车窗几下，想叫醒车里的人。

Tā qiāo le chēchuāng jǐ xià, xiǎng jiàoxǐng chē lǐ de rén.

He knocked on the car window several times trying to wake up the person sleeping inside.