4 sentences

1. 我不懂如何当国王。

   wǒ bù​dǒng rú​hé dāng guó​wáng.

   I don't know how to be a king.

   Source: AI Challenger 2017

2. 到那时，我在学习如何当护士。

   dào nà​shí, wǒ zài xué​xí rú​hé dāng hù​shi.

   By then, I was learning how to be a nurse.

   Source: CCMatrix

3. 他不知道要如何当一个父亲。

   tā bù​zhī​dào yào rú​hé dāng yī​ge fù​qīn.

   He doesn’t know how to be a father.

   Source: CCMatrix

4. 您可以在希腊的任何当地咖啡馆点一杯咖啡。

   nín kě​yǐ zài xī​là de rèn​hé dāng​dì kā​fēi​guǎn diǎn yī bēi kā​fēi.

   You can order a cup of coffee at any of the local cafés in Greece.

   Source: CCMatrix