骑自行车是一种很好的锻炼方式,并且还容易学。Bicycling is a good exercise; moreover, it is easy to learn.骑自行车出入请下车。Cyclists please dismount at the gate.我呢,骑自行车去,你们呢,坐汽车去。I’m going by bike, and you may go by bus.平常我骑自行车上班。I go to work by bicycle as a rule.请你教我怎样骑自行车。Teach me how to ride a bicycle.在快车道上骑自行车,可真悬。Cycling in the fast traffic lane is really dangerous.除了雨天之外,她总是骑自行车上班。She usually goes to work by bike except on rainy days.骑自行车进城go down town by bike