初三英语教案Unit 9 By the time l got outside, the bus had already left.
典型例题
1. By the time I got there, the train _________ already _______. (gone)
解析：当一个动作发生的时候，另外一个动作已经完成，即“过去的过去”，应用过去完成时态，had, gone.
2. When I got to school, I realized I had left my backpack at home. （对划线部分提问）
解析：其答案为What did you realize when you got to school?划线部分是过去完成时态，是realized的宾语从句，应用what提问。
3. By the time we arrived at the cinema, the film had______ for 10 minutes.
A. begun B. been on C. started
解析：当我们到达电影院时，电影已经开始十分钟了（一段时间），应用过去完成时态，选延续性动词，故答案为B。
单元练习
I．根据汉语及首字母写出单词
1. When I began to sing，he laughed and made me very e_________(尴尬的)．
2. After a long trip to Europe，1 felt very e________(精疲力竭的)．
3. a_______：to make known publicly
4. d________：to give an account of in speech or writing
5. a_________：one that is invested with this power，especially a government or