英语人教版九年级全册The Third Period Section A 3a–.ppt

九年级全 同步教学辅助课件 Unit8ItmustbelongtoCarla SectionAPeriodThree laboratoryoutdoorscoatsleepy n 实验室adv 在户外 在野外n 外套 上衣adj 困倦的 瞌睡的 Objective Tolearntousemust might couldandcan tformakinginferencesItmustbeCarla s ItcouldbeMei shairband I mnotsure butitcan tbeadog A Whosevolleyballisthis B ItmustbeCarla s Shelovesvolleyball A Whosehairbandisthis B ItcouldbeMei shairband A Whatdidyouseethatnight B I mnotsure Butitcan tbeadog Itwasbigger Ithinkitmightbeabearorawolf Readthesentencesbelowandpayattentiontotheredwords 1 A Whosevolleyballisthis B It beCarla s Shelovesvolleyball 2 A Whosehairbandisthis B It beMei shairband 3 A Whatdidyouseethatnight B I mnotsure Butit beadog Itwasbigger Ithinkit beabearorawolf must could can t might Ready 表推测的情态动词 情态动词must can may could might都可以表示推测 must表示对现在的状态或现在发生的事情很有把握的推测 意为 一定 准是 可能性为100 如 Youhavestudiedforalongtime Youmustbetired may could might这三个词表示的可能性较小 意为 有可能 也许 可能性占20 至80 如 Myfriendhaslosthiswatch Thismay might couldbehis butI mnotsure can t表示很有把握的否定推测 意为 不可能 可能性为0 如 Thebluemotorbikecan tbeyourmother s Hersisyellow 表推测情态动词的用法 一 根据被推测的时间 确定动词的形式 Goodmorning I vegotanappointmentwithMissSmithinthePersonnelDepartment Ah goodmorning YoumustbeMrs Brown 情态动词 do 形式 表示对现在或将来情况的推测 Tomisneverlateforwork Whyisheabsenttoday Somethingmusthavehappenedtohim 2 情态动词 be doing 形式 表示对此时此刻正在发生的事情的推测 Hemay mightbewaitingforusathome 3 情态动词 havedone 形式 表示对过去情况的推测 二 根据猜测语气的强弱 选择情态动词 在肯定句中表推测 must语气最强 表示 肯定 一定 could may might语气依次减弱 表示 可能 也许 Somepeoplewhodon tliketotalkmucharenotnecessarilyshy theymayjustbequietpeople 2 在否定句中表推测 can t couldn t语气最强 表示 不可能 may mightnot语气较弱 表示 可能不 mustn t表示 禁止 不用于否定推测 Youcan tbehungryalready youhadlunchonlytwohoursago must表推测只用于肯定句 如果要表示否定意义 则要用can t can表推测多用于否定句和疑问句 而用于肯定句一般指 客观可能性 说明人或事物一时的特点 三 某些情态动词表推测时的用法限制 e g Tigerssometimescanbeverykind 1 IsawLilyinthesupermarketthismorning Oh it beher ShemovedtoAustraliathedaybeforeyesterday 2 Afteralongwalk thechildren beverytirednow 3 John gowithustomorrow butheisn tsure can t must may might Usepropermodalverbstofillintheblanks 以下部分为课本练习 供老师在对答案时选择使用 4a Choosethebestwaytocompleteeachsentenceusingthewordsinbrackets 1 A Where sJean B I mnotsure She is mightbe mustbe inthelaboratory 2 A Everyoneisgoingtothepoolafterschool B Really It mustbe can tbe couldbe hotoutdoors mightbe mustbe 3 A That sthephone B Hmm Iwonderwhoit mustbe couldbe shouldbe 4 A IwonderiftheseareJim sglasses B They can tbe mightbe couldbe his Hedoesn twearglasses 5 A Ihearwaterrunninginthebathroom B It couldbe mustbe can tbe Carla Shewasthinkingoftakingashower can tbe couldbe mustbe couldbe 4b Completetheseresponses 1 A Manypeoplearewearingcoats B Theweathermustbe 2 A Sallyhasbeencoughingalot B Shemightbe 3 A Thisrestaurantisalwaysverycrowed B Thefood 4 A WheneverItrytoreadthisbook Ifeelsleepy B Itcan t gettingcolder havingasorethroat ill mustbedelicious bethatboring coldoutside 4c Lookatthispictureofaroom Howmuchcanyoutellaboutthepersonwholiveshere Isitaboyoragirl Whatarehis herhobbies Discussyourideaswithapartner Individualactivity 注 另附word文档 点击此处链接 1 WhoseT shirtisthis It beJohn s It smuchtoosmallforhim 2 Themagazine beLily s forwecanfindhernameonthecover 3 Theman bemyEnglishteacher HehasgonetoCanada 4 Difficultiesalwaysgowithme Cheerup IfGodclosesadoorinfrontofyou there beawindowopenedforyou can t must can t must Usepropermodalverbstofillintheblanks 5 Who ssinginginthegarden It beMr Brown Healwayspracticessingingatthistime 6 IsthemanoverthereMr Brown It behim HehasgonetoBraziltoparticipateinaconference 7 Thewoman beourEnglishteacher ShehasgonetoCanada 8 He beintheclassroom Ithink No he beintheclassroom