4 sentences for 值 (zhí — on duty)

1. 他这周轮到值夜班。

   tā zhè zhōu lún​dào zhí yè​bān.

   He is on the night shift this week.

   Source: Dong Chinese Dictionary

2. 他今天在军营大门口值门卫。

   tā jīn​tiān zài jūn​yíng dà​mén​kǒu zhí mén​wèi.

   He is on guard duty at the main gate of the barracks today.

   Source: Dong Chinese Dictionary

3. 我今晚值夜班。

   wǒ jīn​wǎn zhí yè​bān.

   I'm on night shift tonight.

   Source: OpenSubtitles

4. 这周由我值日，放学后要负责打扫教室卫生。

   zhè zhōu yóu wǒ zhí rì, fàng​xué hòu yào fù​zé dǎ​sǎo jiào​shì wèi​shēng.

   It is my turn to be on duty this week, and I am responsible for cleaning the classroom after school.

   Source: Dong Chinese Dictionary