英语人教版八年级下册罗淑玉微课教案.doc

Section A 4a-4c【学习目标】重点语法：过去进行时的用法；when与while引导的时间状语从句【重点难点】 过去进行时的用法；when与while引导的时间状语从句【课前热身】学生自学过去进行时的有关资料【课堂探究】语法探究过去进行时 概念：表示过去某段时间或某一时刻正在进行的动作。其结构为“_+_” 构成常见时间标志词：句式转换：【观察】1）肯定句式When you called, I was having a shower.I was sleeping at that time.He was reading in the library when the rainstorm came.The students were singing and dancing happily on the playground at that time.【小结】肯定句式：_+was/_+_【观察】2）否定句式Kate Smith was not watching a movie when a plane hit the World Trade Center.In fact, he wasnt helping his mother in the kitchen. He was watching TV.When Mr. Lee came in, they werent reading English, just chatting【小结】否定句式：主语 +_ /were + not +_【观察】3）一般疑问句式Were you playing basketball then?Oh, yes.Was she sleeping at that time?Yes, she was. / No, she wasnt.Were they doing homework at this time yesterday evening? No, they werent.【小结】一般疑问句式：Was/_ + 主语 + _.【观察】4）特殊疑问句式What were you doing at eight last night?What was Ben doing when it began to rain heavily?【小结】特殊疑问句式：疑问词+_/_ + 主语 + _.用法1）表示过去某段时间内正在进行的动作，一般要有表示过去时间的状语At that time she was working in Oxford. 那时，她正在牛津大学工作. He was studying in Cambridge _ 1999 and 2001.在1999年和2001年那段时间，他在剑桥学习. _ January_ March I was traveling in Egypt. 从3月份到4月份期间，我在埃及旅游.2）表示过去某一时刻正在进行的动作，一般要有表示过去时间的状语It was raining at 6 oclock this morning. 今天早晨六点钟天正下着雨.What were you doing when I phoned you last night? 昨晚我给你打电话时你在干什么？3）when 与 while 引导时间状语从句【观察】He was reading in the library when the rainstorm came.When it began to rain, Ben was helping his mom make dinnerWhile Linda was sleeping, Jenny was helping Mary with her homework.While you were sleeping, I called Jenny and she helped me.【小结】while 引导时间状语从句叙述过去的动作时，从句常用_。when 用作并列连词，意为这时，连接两分句时，主句多用_。4)一般过去时与过去进行时的区别【观察】We were building a bridge last winter.去年冬天我们在修建一座桥。(可能尚未建成) We built a bridge last winter.去年冬天我们修建了一座桥。(已经建成)【小结】一般过去时：强调过去某一时间开始或完成的动作。过去进行时：强调过去某一时间正在进行的动作。试区别下面两句： He wrote a letter last night. _He was writing a letter last night. _【当堂检测】用动词的适当形式填空1.While we _ (wait) for the bus, a girl _ (run) up to us.2.I _ (telephone) a friend when Bob _ (come) in.3. It was quite late at ni