辽宁省辽阳市第九中学八年级英语下册Unit3《WhatwereyoudoingwhentheUFOarrived》period1教案人教新目标版1.Words:barbershop,well,bathroom,accident,earth,silence,playground,around,strange,kitchen,modern,follow,shirt.2.when,while引导的时间状语从句。3.学习过去进行时态。4.利用知识谈论过去发生的事情。5.复习过去式，学会讲故事。6.了解一些自然科学知识和社会科学知识。Importantanddifficultpoints:1.when,while引导的时间状语从句。2.学习过去进行时态。Teachingaids:atape-recorder,cards.Period1Teachingprocedures:Step1Leadingin1.Greetingsandfree-talk.2.Checkthehomework.3.DictatethewordsinUnit2.Step2Pre-taskSBPage18,1a.1.Pointtothesentences.Readthesentences.Explainwhateachonemeans.2.Lookatthepicture.Pointoutthesixpeople.Matchthestatementswiththepeopleinthepicture.3.Checktheanswers.4.Practicereading.Step3While-taskSBPage18,1b.1.Readtheinstructions.MakesuretheSsunderstandwhattheyshoulddo.2.Lookatthedialogueinthepicture.Explain:IwasstandinginfrontofthelibrarywhentheUFOarrived.过去进行时态过去进行时态的构成:was/were+doing.用法:表示过去某一时刻或某一段时间正在进行的动作，一般用时间状语来表示。一、过去进行时的主要用法是描述一件事发生的背景；一个长动作发生的时候，另一个短动作发生。常用的时间状语thismorning,thewholemorning,alldayyesterday,fromninetotenlastevening,when,while例如：WewerewatchingTVfromseventoninelastnight.昨天晚上七点到九点的时候我们在看电视。WhatwasheresearchingalldaylastSunday?上周日他一整天都在研究什么？Mybrotherfellwhilehewasridinghisbicycleandhurthimself.我哥哥骑自行车的时候从车上摔下来，受伤了。Itwasrainingwhentheyleftthestation.他们离开车站的时候天正在下雨。WhenIgottothetopofthemountain,thesunwasshining.当我到达山顶的时候，阳光灿烂。二、过去进行时可以表示在过去某个时间点发生的事情。时间点可以用介词短语、副词或从句来表示。如：Whatwasshedoingatnineo'clockyesterday?昨天晚上九点她在做什么？(介词短语表示时间点)WhenIsawhimhewasdecoratinghisroom.当我看见他的时候他正在装饰房间。(when从句表示时间点)三、在复合句中，如果主要动作和背景动作都是延续的或同时发生的，那么主从句的动词都可用过去进行时。例如：Whilehewaswaitingforthebus,hewasreadinganewspaper.他边等车边看报。(两个动作都是延续的)HewascleaninghiscarwhileIwascooking.他擦车时我在做饭。(两个动作同时进行)四、通常不能用于过去进行时的动词主要有：agree,be,believe,belong,care,forget,hate,have(拥有),hear,know,like,love,mean,mind,notice,own,remember,seem,suppose,understand,want,wish等。例如：误：Iwasknowingtheanswer.正：Iknewtheanswer.我知道答案。误：Iwasn'tunderstandinghim.正：Ididn'tunderstandhim.我不明白他的意思。典型例题1)Mary___adresswhenshecutherfinger.A.madeB.ismakingC.wasmakingD.makes答案C.割伤手指是已发生的事情，应用过去时。同时，when表时间的同时性，“玛丽在做衣服时”提供事情发生的背景，因此用过去进行时。2)Asshe___thenewspaper,Granny___asleep.A.read;wasfallingB.wasreading;fellC.wasreading;wasfallingD.read;fell答案B.句中的as=when,while，意为"当……之时"。描述一件事发生的背景时，用过去进行；一个长动作发生的时候，另一个短动作发生。句意为"在她看报纸时，奶奶睡着了。"句中的fell(fall的过去时)，是系动词，后跟形容词，如：fallsick。3.Playthetapetwice.Circlethecorrectresponses.4.Checktheanswers.Step4Post-taskTalkaboutwhatpeopleweredoingwhentheUFOarrived.Step5While-taskSBPage19,2a.1.Readthesentences.MakesuretheSsunderstandwhattheymean.2.Playthetapetwice.Orderthesestatements.3.Playthetapeagain,correcttheanswers.SBPage19,2b.1.Readtheinstructions.2.Playtherecording.Write“when”or“while”oneachline.3.Playtherecordingagain,correcttheiranswers.Notice:when/while※Whencomesbeforeaquickactionthathappensonlyonce.Theword“while”comesfromanactionthatcontinuesforsometime.Step6Post-taskSBPage19,2c.1.Pointortthepicture.Askwhateachpersonisdoing.2.Groupwork:Ask“Whatwas…doingwhentheUFOarrived?”3.Askagrouptosayitsconversationtotheclass.Step7GrammarFocusReviewthegrammarboxbyaskingsomestudentstoreadthesentences.Homework:1.Gooverthewordsinthisunit2.用介词或介词短语填空。①Theyweretalkingthephone.②Iwasthebarber’schair.③TheboywaswalkingthestreetwhenaUFOlanded.④IhadaveryunusualexperienceSunday.⑤ThealienvisitedtheMuseumFlight.课后反思
