Unit2Isthisyourpencil?SectionAbackpackrulerpencilbookpencilcasepencilsharpenerpendictionary1a1.pencil_____2.pen____3.book_____4.eraser_____5.ruler_____6.pencilcase____7.backpack___8.pencilsharpener___9.dictionary____CFBGEDAHI1b.Listenandnumbertheconversations.A:Isthisyourpencil?B:Yes,itis.It’smypencil.A:Isthatyourbackpack?B:No,itisn’t.It’shisbackpack.A:Isthisyourruler?B:No,itisn’t.It’sherruler.321thatthisarulerapencilsharpenerapenabookadictionaryapencilabackpackaneraserapencilcaseIsthisapencilcase?Yes,itis.Isthisyourpencilcase?Yes,itis.It’smypencilcase.No,itisn’t.It’sherpencilcase.Isthataneraser?No,itisn’t.It’sabook.Isthatyourbook?Yes,itis.It’smybook.No,itisn’t.It’shisbook.重点句型：Isthis/thata/an…?Yes,itis.No,itisn’t.It’sa/an…Howdoyouspellit?…Isthis/thatyour…?Yes,itis.Itismy…./No,itisn’t.It’shis/her….2a.Listenandcheckthethingsyouhear.2bListeningTim:Excuseme,Sonia.Isthisyour______.Sonia:Yes,thankyou.Andthatismy_____Tim:AndJane,isthisyour______?Jane:No,itisn’t.It’sherruler.Tim:OK,andthisismy_____.Andthisisyour_________,Jane.eraserrulerbookpencilcasepencil是以be动词(is,are等)，情态动词(can等)或助动词(do,does等)开头表示疑问的句子。对一般疑问句的回答通常需要作肯定或否定回答。一般疑问句：巧变一般疑问句•『秘诀』：•一调二改三问号•一调：即把句中的be（am/is/are)调到主语的前面。•二改：句中的主语若含有I(my/we)等第一人称代词时，需将它们改为you(your/you）•三问号：句末的句号改为问号。Yes,itis./No,itisn’t.1.它们是一般疑问句简略的答语。肯定答语：Yes,主语+be.否定答语：No,主语+be+not.2.简略答语的主语要由问句的主语来决定。若问句中主语是that或this，答语的主语用it.若主语是名词时，答语的主语应用相应的人称代词。如何将含be动词的肯定句变为否定句一般将含be动词am,is,are的肯定句转化为否定句时，直接在be动词am,is,are后加上“not”即可。其他部分不变。e.g.1.Thisisaruler.变：Thisisnotaruler.2.Iamastudent.变：Iamnotastudent.3.TimandIaregoodfriends.变：TimandIarenotgoodfriends.口诀be动词真伟大，生出amisare.表示否定很简单，not加在be后边。若要变为疑问句，be应移到主语前。还有一点要注意，句末问号别忘记。
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