Don't forget to wear a helmet when you bike.

骑自行车时别忘了戴头盔。

同一单元的其他句子

• How do you go to school?你怎样去学校？
• I go to school by bus.我坐公交车去学校。
• She goes to work on foot.她步行去上班。
• Do you ride a bike?你骑自行车吗？
• He takes the subway every day.他每天坐地铁。