突然间，天空下起了大雨。

Tūrán jiān, tiānkōng xià qǐ le dà yǔ.

All of a sudden, it started pouring rain.

突然间，所有的灯都灭了，屋里一片漆黑。

Tūrán jiān, suǒyǒu de dēng dōu miè le, wū lǐ yī piàn qīhēi.

All of a sudden, all the lights went out and the room was pitch dark.

我正在散步，突然间听到身后有人叫我的名字。

Wǒ zhèngzài sànbù, tūrán jiān tīngdào shēnhòu yǒu rén jiào wǒ de míngzì.

I was taking a walk when suddenly I heard someone calling my name from behind.