Unit8ItmustbelongtoCarla（第4课时）一、Teachingaims：1.Knowledgeaims：1)words：laboratory,coat,sleepy,pocket2）ReviewandconsolidateimportantpointsinSectionA.2.AbilityaimsMastertheusageofmodalverbsandbeabletousethemincorrectsituation.二、Teachingimportantanddifficultpoints1.Importantpoints：1)Revision2)Summarizetheusageofsomemodalverbs.2.Difficultpoints：1)Theusageofmodalverbs.2)Masterthetargetlanguage.三、TeachingproceduresⅠ.RevisionReviewsomemainphrasesandsentenceswelearnedinthelastclass.Ⅱ.GrammarFocusFillintheblanks.1.这是谁的排球?___________________isthis?这一定是卡拉的。她热爱排球运动It_________be______.Shelovesvolleyball.2.这是谁的发带？__________________isthis?它可能是梅的发带。或者可能属于琳达。她们两人都是长头发。It_____beMei’shairband.Orit______belongtoLinda.They___havelonghair.3.那晚你看见了什么？______didyouseethatnight?我不确定，但肯定不可能是狗。它更大。我想也许是一头熊或一匹狼。I'm_________,butit_________adog.Itwasbigger.Ithinkit_________abearorawolf.Ⅲ.TrytoFind情态动词表推测，可能性：must>can/could>may/might一、must表示可能性最大的肯定推测，意思是“一定、准是”。只能用于肯定句。如果要表示“一定不”，应该用can't。如果询问可能性时，应该用can。e.g.Hemustknowtheanswers.Hecan'tknowtheanswers.二、can/couldcan表示推测“可能性”时，一般用于否定句或疑问句。can在疑问句中意思是“会，可能”。e.g.Hecan’tpickherschoolbagup.could用于表示某事有可能发生或可能是事实。e.g.Don’teatit.Itcouldgobad.Theplanecouldbeputoffbythestorm.could可用于表示客气、礼貌、委婉的请求语气。Couldyoupleasehelpmewithmyhomework？三、may/mightmay,might表示推测“可能性”时，意思是“可能”，“也许”。might不表示过去时态，语气更委婉，可能性更小。may,might表推测时，可用于否定句，但不用于疑问句。e.g.Hemay/mightnotbeathome,butI'mnotsure.他可能不在家，不过我也不确定。Ⅳ.ExercisesChoosethecorrectanswer.1.—Excuseme.IsthistherightwaytotheSummerPalace?—Sorry,Iamnotsure.It________be.A.mightB.willC.mustD.can2.—Isn’tthatAnn’shusbandoverthere?—No,it____behim—I’msurehedoesn’twearglasses.A.can’tB.mustnotC.won’tD.maynot3.You______betired—you’veonlybeenworkingforanhour.A.mustnotB.won’tC.can’tD.maynot4.—IsJohncomingbytrain?—Heshould,buthe________not.Helikesdrivinghiscar.A.mustB.canC.needD.mayWorkon4a.Choosethebestwaytocompleteeachsentenceusingthewordsinbrackets.1.让学生们理解句子意思。1.A:Where’sJean?B:I’mnotsure.She______(is/mightbe/mustbe)inthelaboratory.2.A:Everyoneisgoingtothepoolafterschool.B:Really?It_______(mustbe/can’tbe/couldbe)hotoutdoors.3.A:That’sthephone.B:Hmm.Iwonderwhoit_______(mustbe/couldbe/shouldbe).4.A:IwonderifthereareJim’sglasses.B:They_______(can’tbe/mightbe/couldbe)his.Hedoesn’twearglasses.5.A:Ihearwaterrunninginthebathroom.B:It_______(couldbe/mustbe/can’tbe)Carla.Shewasthinkingoftakingashower.2.ChecktheanswerswiththeSs.Keys:mightbe,mustbe,couldbe,can’tbe,mustbe3.Explanation.(1)besure(of/aboutsth/doing)确信...，对...有把握besuretodosth“必定”，“必然会”,"准会"(2)表示“位移”的动词用现在进行时态表将来，例如：go去，come来，leave离开，arrive到达，return回来，fly飞。(3)wonderv.“想知道”（wanttoknow）Nowonder+句子“难怪.....”e.g.Nowonderyouareangry.难怪你觉得生气。(4)thinkof想要；打算e.g.Ithoughtofplayingbasketball.我想打篮球。四、推测时态1.must:推测现在/正在/过去发生的动作。e.g.Hemusthaveacarnow.(现在)他一定有一辆小汽车。Hemustbefinishinghishomeworkathome.(正在进行...
