[初一英语]过去完成时.pptVIP

Language 过去完成时 过去完成时的概念 过去完成时态构成： 肯定式：had + 动词的过去分词 否定式：hadn’t + 动词的过去分词 疑问式：Had …+ 动词的过去分词 简略回答: Yes, 主 + had. No, 主 + hadn’t. 缩写形式：I’d, he’d, we’d, they’d. 过去完成时的用法： 1、过去某一个特定时间之前发生的事。 常与by last year, by the time… , by nine o’colck yesterday , by ten o’clock this moening, before 8 o’clock this morning 等连用。 e.g. By nine o’clock yesterday evening, I had finished my piano lesson. 2. Before ten o’clock this morning , she had done the work. 3.The bus had left by the time they arrived. 2.当谈到过去的两个行为时，过去较早的行为 用过去完成时，较晚的行为用一般过去时。 e.g. 1.When we got home, we learnt that the police had just been to the flats. 2.When Mr .Li got to the class , all the students had began reading. 2. Mary began to dry her hair with a hairdryer. She had already washed it. 3、表示从过去某一时间开始一直延续到过去另一时间的动作或状态。常与for (后跟段时间)或since (后跟点时间)等连用, 如:　　 1. They had lived in Guangzhou since 2004 and last month ,they moved to Shenzhen. 2. I had not seen my friend Amy for a long time ,so Last Sunday I went to visit her. 例题解析：举一反三，学的更轻松！ 1. He ______ in Shanghai University for four years before he ______ Beijing. A. studied, had gone B. had studied, went C. has studied, goes D. had studied, had gone 解析：他去北京之前在上大学学习了4年。在上海学习的动作发生在去北京之前，因此第一个空应用过去完成时。此题选B。　　 2. Mary said it was at least five years since he ______ a good drink. A. enjoyed B. was enjoying C. had enjoyed D. would enjoy 解析：It was + 时间段+since 引导的从句 中用过去完成时。应选C。 3. Xiao Pei said she ______ Hainan for 3 months. A. has been in B. had been in C. had been to D. had gone to　 解析：小培说她去了海南三个月。Have been to 和have gone to都是短暂性的动词短语。所以适应表示状态的have beenin. 应选B. 过去完成时常用句型： 一、主语+过去完成时+when引导的从句(从句谓语动词为过去式)如Tom?was?surprised?that?most?of?the?guests??_____（leave) when?he?______ (arrive)at?the?party. had left arrived 二、主语+过去完成时+by短语。例如:We _____ four?thousand?new?words? by?the?end?of?last?year.A.