Where did you go on vacation ?教材分析1、 教学背景和内容 本单元的中心话题“holidays and vacations”。在前一单元一般过去式的基础上继续学习如何谈论发生在更远的过去的事情。功能语法是Talk about past events。语法结构是Past tense of regular and irregular verbs, was /were and How questions. 目标语言是Where di