3 sentences for 一口气 (yī​kǒu​qì)

1. 他一口气喝完了一壶水。

   tā yī​kǒu​qì hē wán le yī hú shuǐ.

   He drank a whole pot of water in one breath.

   Source: Dong Chinese Dictionary

2. 他一口气读完了整本书。

   tā yī​kǒu​qì dú wán le zhěng běn shū.

   He finished reading the entire book in one go.

   Source: Dong Chinese Dictionary

3. 他深吸了一口气，然后潜入水中。

   tā shēn​xī le yī​kǒu​qì, rán​hòu qián​rù shuǐ zhōng.

   He took a deep breath and then dove into the water.

   Source: Dong Chinese Dictionary