习作主题:教你学一招。星期天,我在外面看见人家在骑自行车,我也想学。于是我就跑到邻居家借了一辆小自行车。我请妈妈帮忙扶车把,我坐到车上。然后,妈妈用两只手扶着车尾, Practice theme: teach you to learn a trick. On Sunday, I saw people riding bicycles outside, I also want to learn. So I went to the neighbor borrowed a little bike. I asked my mother to help the handlebar, I sat in the car. Then, mother with both hands holding the car,