浙江省杭州市余杭区亭趾实验学校八年级英语下册 Unit 3 What were you doing when the UFO arrived？ Period 1 Section A 1a2c导学案（无答案） 人教新目标版.doc

八年级英语下册 unit 3 what were you doing when the ufo arrived？ period 1 section a 1a-2c导学案（无答案） teachers words knowledge is power.(知识就是力量)【teaching aims and demands】 1. key and difficult vocabulary: barber, bathroom, bedroom, kitchen, alien, bought, land, got, while，get out of, take off。 2. key structures: what were you doing when the ufo arrived ? i was standing in front of the library .【moral goals】to lead the students to enjoy life【teaching key and difficult points】1. master the usage of the past continuous tense.2. be aware of the employment of past tense and past continuous tense.3. the different use of when and while【learning guide】1. situation simulating method2. communicative method3. task-based method一、【导学过程】task1：会说会写会运用下列单词(能够说出一些单词的用法)1卧室_ 2厨房_3浴室_4着陆_ 5离开_ 6起飞_7barber shop_ 9alien _ task2：会说会运用下列词组：1.站在图书馆前_ 2.睡过头_ 3.做晚饭 _4.从出来 _ 5.吃午饭 _ 6.理发_ 7.打扫房间_ 8.在通电话_task3：写出下列动词的过去式。get_ take_ think_ buy_ bring_do_ am/is_ go_ plan_ stop_study_ learn_ play_ tell_ talk_task4：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._【知识链接】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 _my parents were watching tv.4. it was snowing heavily _we got home. in front of 与in the front ofin front of 在前面（范围外）in/at the front of 在前面（范围内）eg : there is a big tree the classroom. follow sb. to do sth. 跟着某人去做某事 译：请跟我读。 . surprise=amaze v. the news surprised/amazed me. .arrive,get和reach的区别。三者都有“_”之意，但arrive表“到达某地”时，后面必须跟介词_或_; get后跟地点名词时要加介词_; reach后则可直接跟地点名词。如:get to beijing=_/_温馨提示:get home/there=arrive home/there=reach home/there二、自主学习: task1.【问题探究】1discuss in groups：match the statements with the people?2. .1b.listen to the tape and circle the correct the responses.task2. 1.listen and circle the words you hear2.listen and number the statements.3. .listen again and complete the following setences.task3. groupwork2c make sentences三、【目标检测】（一）用所给词的适当形式填空。1). while i was driving to the airport, the plane _(起飞) .2). mr smith _(fly) a kite with his son at this time yesterday. now he _ (read) a book in his bedroom.3). when i got out of the shower, my little brother _(clean) his room.4). my mother _(buy) me a pair of new shoes.5). while i _(cut) my hair , father _(在通电话) with his friend. （二）用 when 或 while 填空。1)._ tom was eating supper, it began to rain outside. 2). dont use your phone_ you are driving a car. 3). what were you doing _ mr. zhou came in ? 4).jim is good at math _ mary is good at english. 5). we were watching tv _ the electricity was off. 6)._peter was sleeping; a thief broke into his house. 7).it snowed _ we arrived in tokyo. 8).she left her hometown_ she was five. 9).i was studying in the library_ the ufo landed.。10)._the spring comes, the weather gets warmer and warmer. 11). _ i was buying the newspaper, the dog ran away. 12). my mother is cooking _ i am doing my homework（三）用方框中的词填空： get out of , take off , call cut hair buy 1、when will the plane _ ?2、my father w