Unit 10 I've had this bike for three years (Section B 1a-1d) (3a-Self Check)3
【学习目标】
? 掌握并灵活运用本课的重点词汇：since for while
? 重点短语：been around
? 重点句型：It’s been around for at least 20years.
【学习重难点】
? 听懂谈论家乡变化的对话；能写一篇关于自己身边的事物变化的文章
【自主学习】
1. 至少；起码________
2. hundreds of years________
3. next to ________
4. as long as只要/时间长达
5. been around 一直在
