1) 概念:表示过去某时正在进行的状态或动作。 2) 过去进行时的主要用法是描述一件事发生的背景;一个长动作发生的时候,另一个短动作发生。 3) 常用的时间状语 this morning, the whole morning, all day yesterday, from nine to ten last evening, when, while My brother fell while he was riding his bicycle and hurt himself. http://yingyu.chazidian.com It was raining when they left the station. When I got to the top of the mountain, the sun was shining. 典型例题 1) Mary ___ a dress when she cut her finger. A. made B. is making C. was making D. makes 答案C. 割伤手指是已发生的事情,应用过去时。同 时,when表时间的同时性,玛丽在做衣服时提供事情发生的背景,因此用过去进行时。 2) As she ___ the newspaper, Granny ___ asleep. read; was falling B. was reading; fell C. was reading; was falling D. read;fell 答案B.句中的as = when, while,意为当……之时。描述一件事发生的背景时,用过去进行;一个长动作发生的时候,另一个短动作发生。句意为 在她看报纸时,奶奶睡着了。句中的 fell (fall的过去时),是系动词,后跟形容词,如:fall sick。