人教版九年级英语第十二单元知识点总结Unit 12 Life is full of the unexpected.1 单词unexpected by the time backpack oversleep give sb a lift block in line with worker stare disbelief above burn burning alive airplane till west cream workday pie show up bean market by the end of fool costume embarrassed costume party announce spaghetti hoax sell out discovery lady cancel officer believable disappear embarrassing本单元语法：过去完成时。过去完成时表示在过去某一时间点以前即“过去的过去”已经发生的动作。Mr. Black told me that he had seen the movie three
