山东省宁阳县第二十五中学八年级英语下册《Unit3 What were you doing when the UFO arrived（第1课时）》学案（无答案） 人教新目标版.doc

山东省宁阳县第二十五中学八年级英语下册unit3 what were you doing when the ufo arrived（第1课时）学案（无答案） 人教新目标版课题名称八年级下册unit3 what were you doing when the ufo arrived ?课时共5课时授课班级第1课时总课时数11教学重点过去进行时 was / were + doing sth.教学难点过去进行时时态的熟练运用，when 和while 的用法区别课前准备the learning papers ,the ppt ,the listening materials ,the notes.学 案一 快乐预习.(一)学习方式：按要求自主完成下列内容.(二)预习内容： 1、朗读并识记p18-19的单词及短语. 2、翻译p18-19的句子.(三）预习检测：补全句子1.-what were you doing when the thief got into your house?-i was _(做晚饭).1、 there is a new_(理发店) next to my house.2、 i was waiting for a bus when the ufo_(降落) the street.3、 the giel was shopping when the alien _(出来) the ufo.2、 预习质疑： .学习目标：1.learn to talk about past events. 2. use “when/ while”and the past progressive tense.二、合作探究：（一）阳光展示：组内交流课前自主学习内容.（二）导学点拨： 过去进行时 1.含义：表示过去的某一时刻或某一时间内正在进行或发生的动作。2.构成：was/were +v-ing。3.标志：at that time, this time yesterday, all the evening, from 8:00 to 10:00yesterday, just then, at nine yesterday, when等表示明确有具体的时间状语。eg：i was doing my homework at this time yesterday.what was tom doing at ten yesterday.i was eating dinner when the phone rang. when与while用法 1.when是“当时候”，相当于at that time,既可以表示某一时刻又可以表示某一段时间，所以when引导的时间状语从句动词既可以是延续性的，又可以是非延续性的。when引导的时间状语如果是一般过去时，主句一般用过去进行时。而while也意为“当时候”，相当于during the time，表示某一段时间历里的情况，故其引导的时间状语从句中的动词必须是延续性的。eg：while i was watching tv, my mother came back.=when my mother came back, i was watching tv. 2.while重在强调其后的动作与助于动作的对比，表示“与此同时”。eg：she was listening to music while i was playing computer games.（三）针对性练习1）_ the teacher came in, we were talking and laughing.2)i got home_ my mother was cooking dinner.3)they were dancing _ we came to meet them.4)_the alien was visiting the museum, the boy called the police.三拓展提高：1.answer the questions: do you know ufo? have you seen it? what were you doing when the ufo arrived?2.完成1a 2a 2b 听力.3. 3c . groupwork .make conversations .进行替换练习会话.课堂小结:四感恩达标：（一）选择填空： 1. who jumps _ in your class? a. far b. farther c. farthest d. longer 2. you must have _ beyonce, and she is a very famous singer who sang a song for the 77th annual academy awards(第77届奥斯卡金像奖颁奖典礼). a. heard fromb. heardc. heard ond. heard about 3. we must hurry up, and the plane will _ in five minutes. a. leaveb. goc. take offd. lands on 4. ted _ while he _ his bicycle and hurt himself. a. fell, was ridingb. had fallen, rode c. fell, were ridingd. had fallen, was riding 5. the reporter said that the ufo _ east to west when he saw it. a. was traveling b. traveled c. had been traveling d. has traveled 6. when i arrived at his office, he _ on the phone. a. spokeb. was speaking c. had been speakingd. had spoken 7. his computer is _ expensive _ toms. a. as; asb. so; asc. much; asd. as; than 8. tom _ into the house when no one _. a. slipped, was lookingb. slipped, had looked c. had slipped, looked d. was slipping, looked （二）用介词或介词短语填空。1.they were talking _ the phone .2.i was _ the barbers c