It was snowy. The road was icy.A car was hitting a tree. The car was in bad shape.Look at the picture: What was the weather like? What happened? 想一想:当我们在描述一个过去的事件时,会运用哪些时态 呢?探究一1. 看4a中的表格,判断John与Mary的动作是延续性的还是非延续性的。2. 小组讨论并归纳: 和 都表示“当时”;用于过去进行时,只与延续性动作连用; 用于一般过去时,与非延续性动作连用。whilewhenwhilewhen探究二1. 完成4b,用was, were, when或while填空。提示:was用于单数,were用于复数,when后接一般过去时,while后接过去进行时。2. 根据文章事件发生的先后顺序,将序号填在流程图中。made breakfast ate went out listened to the radio got to the place talked about a car accident saw car in bad shape探究三1. 想一想上周日自己做了什么,完成课文4c中的表格中第一栏的信息。(注意用过去进行时)2. 问你的搭档做了什么,记录下来,完成表格第二栏的信息。I: What were you doing at 9:00 a.m.?Partner: I was doing homework. How about you?I: I was sleeping.注意:画线部分可以被替换。3. 根据表格填空的信息,写一个报告。你可以这样开始:Last Sunday, while I was sleeping, my partner. was doing homework. While I was.过去进行时的含义与用法小结1. 含义:表示在过去某一时刻或某一段时间内进行或发生的动作。(1) 肯定句:主语+was/were+doing+其他如:I was watching TV. 我在看电视。(2) 否定句:主语+was/were+not+doing+其他如:I was not watching TV. 我不在看电视。(3) 一般疑问句结构及其答语:Was/Were+主语+doing+其他?答语:Yes, 主语+were/ was./No, 主语+werent wasnt. 如:Were you watching TV? Yes, I was. / No, I wasnt.(4) 特殊疑问句结构:特殊疑问词+was/were+主语+doing+其他?如:What were you doing? 你在做什么?2. 用法:常与表示过去的时间状语连用,如:last night, last Saturday等;或者与when, while等引导的过去时间状语连用。如:(1) We were watching TV at seven last night. 昨天晚上七点的时候我们在看电视。 (2) What was Jenny doing while Linda was sleeping?当Linda睡觉时,Jenny正在做什么?