内容介绍：Unit 5 Topic 1gate [ɡe t] n．大门 by [ba ] prep．（表示方式，如乘车等）；按照 adv. 经过subway [\'s bwe ] n．地铁 =underground [nd \'ɡra nd] by subway乘地铁 always [\' :lwe z] adv．总是，一直 come on 快点儿；加油；来吧 on foot 步行 plane [ple n]