3 sentences

1. 学校的工友正在操场上修剪草坪。

   xué​xiào de gōng​yǒu zhèng​zài cāo​chǎng shàng xiū​jiǎn cǎo​píng.

   The school maintenance worker is mowing the lawn on the field.

   Source: Dong Chinese Dictionary

2. 下班后，他经常和几位工友去附近的餐馆吃饭。

   xià​bān hòu, tā jīng​cháng hé jǐ wèi gōng​yǒu qù fù​jìn de cān​guǎn chī​fàn.

   After work, he often goes to a nearby restaurant with some coworkers.

   Source: Dong Chinese Dictionary

3. 在这篇描写旧社会的文学作品中，工友们的生活非常困苦。

   zài zhè piān miáo​xiě jiù shè​huì de wén​xué zuò​pǐn zhōng, gōng​yǒu men de shēng​huó fēi​cháng kùn​kǔ.

   In this literary work describing the old society, the lives of workers were very miserable.

   Source: Dong Chinese Dictionary