★ 重点单词、短语
1. by the time... 到……的时候
2. give ... a lift 捎某人一程
3. in line with 与……成一排
4. stare at 凝视；盯住
5. in disbelief 不相信地；怀疑地
6. turn into 变成
7. full of 充满
8. go off 发出响声
9. show up 赶到；露面
10. by the end of 到……末为止
11. sell out 卖光
12. end up 最终成为；最后处于
13. play a trick on sb 捉弄某人
14. run out of 用完；用尽
★ 重点语法
单元语法重点：过去完成时。
【例句】
1. She had seen ten films by last Friday. 到上周五为止，她已经看了十部电影了。
2. By the end of last October, she had collected 400 stamps. 到去年十月末，她已经收集了 400 枚邮票了。
3. By the time my parents reached home yesterday, I had already cooked dinner. 我父母昨天到家时，我已经做晚饭了。
4. Before Rebecca came to China in 2014, she had taught English in Korea for two years. 丽贝卡在 2014 年来中国之前，已经在韩国教了两年英语了。
5. When we arrived at the cinema, the film had already begun. 当我们到电影院的时候，电影已经开始了。
【寻找“窍门”】
通过上面的句子，发现了什么规律？快来总结一下吧！