in other words换句话说 look forward to期待 at the start of在开始的时候 at the end of在结束的时候 go to college上大学 be divided into被分成 take part in参加 make sure确信 so that因此 make progress取得进步 as a result结果 in fact事实上 fall asleep睡着 tell jokes讲笑话 get on上 get off下 get into上 get out of下 take off起飞 be short for简称 not…any more不再 out of date过时 refer to指的是 put up修建 so far到目前为止 up to know到目前为止 till now到目前为止 get away from摆脱 a great many许多 a nummber of许多 go up上升 add to 加入 used to 过去 in the area of在……领域 be proud of为……感到骄傲 be supposed to 应当 consist of 由……组成 as well也 become known as作为……而出名 go down下降 come up with提出 from that moment on从那时起 concentrate on 聚精会神 compared with与……相比