江西省金溪县第二中学八年级英语下册 Unit 3 What were you doing when the UFO arrived Section A(1a2c)导学案 人教新目标版.doc

unit 3 what were you doing when the ufo arrived section a(1a-2c) 1.会读及运用以下新单词和词组：barber, bathroom, bedroom, kitchen, alien, bought, land, got, while，get out of, take off。 2.学习过去进行时的构成及用法。3.掌握when 与while 引导的时间状语从句。【重难点预测】1.过去进行时的构成与用法。2.when 与while的用法区别。【新知导学】1.what are you doing? im having an english class.2.where were you at this time yesterday? i was in the classroom.3.what were you doing at this time yesterday? i was having a math class.【自主预习】1.请同学们先认真阅读学习目标，然后仔细研读课本p1819，看完后将所学到的东西进行归纳，画出重要知识点，用红笔做好疑难标记。2.试着读一读单词表中本课时的新单词（或词组），将不会的单词圈出来，然后通过听磁带或求助于其他等方式将单词读准、读熟。3.写出下列动词的现在分词。walk study clean_make live arrive_shop_ get cut_4.翻译下列词组，如有困难，可参考资料。in front of the library_ make a milk shake_sleep late cook dinner_get out of_ talk on the phone_ cut hair see the alien get out_visit the museum of flight_ land on_ buy a souvenir_ go into a store_call the police_ take off_5.把下列句子译成汉语，再模仿例句写一个。1) the girl was shopping when the alien got out._2) while the boy was walking down the street , the ufo landed._6.模仿下面的对话编写自己的对话。1) a: what were you doing when the teacher came into the classroom?b: i was talking with my partner._2) a: what did you do while your mother was cooking?b: i did my homework._【合作探究】 任务1：听一听课本1b,2a,2b的听力训练题，注意听前要利用where were the people in the picture when the ufo landed and what was he /she doing when the ufo landed句式谈论课本上的图片，可降低听力难度。任务2：完成听力之后，在小组内共同完成课本p19上2c的活动。如：a: what was the man doing when the ufo took off?b: while the man was taking a photo, the ufo took off.c: when the ufo took off, the girl was 任务3：仔细研读课本p96的语法过去进行时，在组内交流过去进行时的结构及其用法。_考点聚焦when和while的区别 when表示当时候,既指时间点，也可指一段时间；while表示当时候,只指一段时间，因此when引导的时间状语从句中的动词可以是终止性动词，也可以是延续性动词，而while从句中的动词必须是延续性动词。when从句的动作和主句的动作可以是同时发生，也可以是先后发生；while 则强调主句的动作在从句动作的发生的过程中或主从句两个动作同时发生，从句常用进行时态。由when引导的时间状语从句，主句用过去进行时，从句应用一般过去时；若从句和主句的动作同时发生，两句都用过去进行时的时候，多用while引导，如： when the teacher came in, we were talking. =while we were talking, the teacher came in. they were singing while we were dancing.不说they were singing when we were dancing.when和while 还可作并列连词。when表示“在那时”；while表示“而，却”，表对照关系。如： 1. the girl was running across the road when a motor bike knocked her down. 那女孩正要跑过马路，这时一辆摩托车把她撞倒。 2. he is tall while his father is short. 他长得很高，而他爸爸却很矮。 练一练：用when和while填空1._ the boy was walking to school, he saw a bird in a tree.2._i left the classroom, the students were cleaning the blackboard. 3. i was surfing the internet _m