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
一.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:过去完毕时
过去完毕时表达在过去某一时间点此前即“过去的过去”已经发生的动作
Black told me that he had seen the movie three times
⑴ 过去完毕时表达在过去某一时间或动作之前已经发生或完毕的动作
它表达动作发生的时间是“过去的过去”
⑵ 过去完毕时的构造是:肯定由“助动词 had(用于多种人称和数) + 过去分词”构成 否认式:had not + 过去分词 缩写形式:hadn’t ⑶ 过去完毕时的时间状语:① 表达过去某一时间可用 by, before 等构成的短语
We had finished our homework before 10 o’clock
② 也许通过 when, before 等引导的从句表达
When I got there, the train had left
③ 过去某一时间通过上下文来表达