听到妈妈的声音，孩子立刻跑到门口迎接。

Tīngdào māma de shēngyīn, háizi lìkè pǎodào ménkǒu yíngjiē.

Upon hearing her mother's voice, the child immediately ran to the door to greet her.

下课铃一响，学生们就跑到操场上去了。

Xiàkè líng yī xiǎng, xuéshēngmen jiù pǎodào cāochǎng shàng qùle.

As soon as the bell rang for the end of class, the students ran to the playground.

他跑到超市买了一瓶水回来。

Tā pǎodào chāoshì mǎile yī píng shuǐ huílái.

He ran to the supermarket and bought a bottle of water to bring back.