3 sentences

1. 他每天坐地铁上下班。

   tā měi tiān zuò dì​tiě shàng​xià​bān.

   He commutes by subway every day.

   Source: Dong Chinese Dictionary

2. 上下班高峰期的地铁非常拥挤。

   shàng​xià​bān gāo​fēng​qī de dì​tiě fēi​cháng yōng​jǐ.

   The subway is very crowded during rush hour.

   Source: Dong Chinese Dictionary

3. 为了省钱，他每天坚持走路上下班，从不打车。

   wèi​le shěng​qián, tā měi tiān jiān​chí zǒu​lù shàng​xià​bān, cóng bù dǎ​chē.

   To save money, he walks to and from work every day and never takes a taxi.

   Source: Dong Chinese Dictionary