Unit 12,What did you do last weekend,Introduce,A: Who went to the library? B: Sally did. A: What did Jim do last weekend? B:,Words,ago u 副词，意为“以前”，常用于“一段时间+ago”的结构中用于一般过去时态。 eg： My mother went to Beijing two days ago. 我妈妈两天前去北京了。 小练习：单项选择。 My uncle went to Nanjing _. A. a week before B. a week ago C. before a week D. ago a week,B,Expressions,Thereweputupourtentsandmadefiretokeepuswarmandcookfoodon. 在那里，我们搭起了帐篷，生火，取暖，做饭。 putup 举起，张贴，搭建 keep sb./sth.+ adj. 保持 小练习：单项选择。 If you keep _
