4 sentences

1. 我每天骑单车去上学。

   wǒ měi tiān qí dān​chē qù shàng​xué.

   I ride a bicycle to school every day.

   Source: Dong Chinese Dictionary

2. 他使劲地踩着单车。

   tā shǐ​jìn de cǎi zhe dān​chē.

   He pedaled the bike vigorously.

   Source: Dong Chinese Dictionary

3. 这种共享单车在城市里随处可见。

   zhè zhǒng gòng​xiǎng dān​chē zài chéng​shì lǐ suí​chù​kě​jiàn.

   This kind of shared bike can be seen everywhere in the city.

   Source: Dong Chinese Dictionary

4. 共享单车方便了市民的日常出行。

   gòng​xiǎng dān​chē fāng​biàn le shì​mín de rì​cháng chū​xíng.

   Shared bikes have made daily travel more convenient for citizens.

   Source: Dong Chinese Dictionary