中考英语--过去完成时(共25张PPT)

过去完成时表示在过去某一时间或动作之前已经发生或完成了的动作， 即“过去的过去（ past-in-the-past ）”。 ----|---------------- |--------------|------------> 　　　　　 一、过去完成时的概念与结构特点 那时以前 那时 现在 * 构成：主语+助动词 had + 过去分词（ v-ed） 1.They had already had breakfast before they arrived at the hotel. 　　 2.By nine o’clock yesterday evening he hadn’t got home. 3.--Had you known anything about our school before you came here? --Yes, I had. / No, I hadn’t. 4.What had your sister been before she became an actress? 二、过去完成时的判断依据 1.由“过去的过去”来判定。 过去完成时表示“过去的过去”，是指过去某一动作之前已经发生或完成的动作，即动作有先后关系，动作在前的用过去完成时，在后的用一般过去时。这种用法常出现在： 在时间、条件、原因、方式等状语从句中，主、从句的动作发生有先后关系，动作在前的，要用过去完成时，动作在后的要用一般过去时。如： When I got to the station, the train had already left. After he had finished his homework, he went to bed. （ 1 ）状语从句中 * （ 2 ）宾语从句中 当宾语从句的主句为一般过去时，且从句的动作先于主句的动作时，从句要用过去完成时。在told, said, knew, heard, thought等动词后的宾语从句。如： She said that she had seen the film before. They explained what had happened. * 2. 由时间状语