教学过程一、导入LeadinginGreetingsandfree-talk.Checkthehomework.DictatethewordsinUnit2.二、Pre-taskPage18,1a.Pointtothesentences.Readthesentences.Explainwhateachonemeans.Lookatthepicture.Pointoutthesixpeople.Matchthestatementswiththepeopleinthepicture.Checktheanswers.Practicereading.三、While-taskReadtheSBPage18,1binstructions.Makesurethestudentunderstandwhattheyshoulddo.Lookatthedialogueintheflash.学习Whatwereyoudoingwhen…句型说明: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。IwasstandinginfrontofthelibrarywhentheUFOarrived.Playthetapetwice.Circlethecorrectresponses.Checktheanswers.四、While-task使用其中相关素材（一）Page19,2a.Readthesentences.MakesuretheSsunderstandwhattheymean.Playthetapetwice.Orderthesestatements.Playthetapeagain,correcttheanswers.（二）Page19,2b.Readtheinstructions.Playtherecording.Write“when”or“while”oneachline.Playtherecordingagain,correcttheiranswers.Notice:when/whileWhencomesbeforeaquickactionthathappensonlyonce.Theword“while”comesfromanactionthatcontinuesforsometime.五、Post-taskPage19,2c.Pointoutthepicture.Askwhateachpersonisdoing.Groupwork:Ask“Whatwas…doingwhentheUFOarrived?”Askagrouptosayitsconversationtotheclass.六、GrammarFocusReviewthegrammarboxbyaskingsomestudentstoreadthesentences.七、Homework:Gooverthewordsinthisunit用介词或介词短语填空。Theyweretalking____thephone.Iwas____thebarber’schair.Theboywaswalking____thestreetwhenaUFOlanded.Ihadaveryunusualexperience____Sunday.ThealienvisitedtheMuseum____Flight.
