搭配 “get on” 和 “get off” 可以分别用来表示 “登上” 和 “离开” 不同的交通工具，比如：自行车 bikes/bicycles、火车 trains、公共汽车 buses 和摩托车 motorbikes，等等。

注意，如果要描述 “上、下” 汽车 cars、出租车 taxis、货车 vans、卡车 trucks，则应该用 “get in” 和 “get out”。比如：get in the car 上车；get off the taxi 下出租车。

例句

It's a lovely day. We should go out, get on our bikes and enjoy the sunshine!

今天天气真好。我们应该走出去，骑上自行车，享受外面的阳光！

I don't have time to stop and chat – my train's leaving in ten minutes and I need to find where I can get on!

我没时间停下来聊了，我的火车还有十分钟就要开了，我得去找一下从哪里上车！

She didn't have a valid bus ticket so I told her she had to get off.

她没能出示有效的公共汽车票，所以我告诉她必须下车。