3 sentences for 什 (shén — what)

1. 这些是做什么用的？

   zhè​xiē shì zuò shén me yòng de?

   What are these for?

   Source: OpenSubtitles

2. 你在这里干什幺？

   nǐ zài zhè​lǐ gàn shén yāo?

   What are you doing here?

   Source: OpenSubtitles

3. 你最近一直在忙些什么，好久没见你出来运动了。

   nǐ zuì​jìn yī​zhí zài máng xiē shén me, hǎo​jiǔ méi jiàn nǐ chū​lái yùn​dòng le.

   What have you been busy with lately? It's been ages since I last saw you out for a workout.

   Source: Dong Chinese Dictionary