（第二）常见单词、词组、句型：
八下 U6 collect 搜集, marathon 马拉松, skate 滑冰, raise 筹钱、喂养, stamp 邮票, shell 贝壳, kite 风筝, globe 地球, monster 怪兽, coin 铅笔, skater 滑冰者, collector 收藏家, particularly 尤其, run out of 用完, be interested in 对…感兴趣, by the way 顺便说, since 自从, for 因为, times 几次, numbers 数字, hobby 爱好
How long have you been skating? 你溜冰多长时间了？
I’ve been skating since nine o’clock. 我从九点开始溜冰。
When did you start skating? 你什么时候开始溜冰的？
I started skating at nine o’clock. 我九点开始溜冰。
