R七年级上册SectionA第2课时Unit7Howmucharethesesocks?Howmuchisthehat?It’sfivedollars.HowmuchisthisT-shirt?It’ssevendollars.Howmuchisthatbrownsweater?It’seightdollars.Howmucharethesesocks?They’retwodollars.Howmucharethoseblacktrousers?They’reninedollars.GrammarFocusHowmuchisthehat?这顶帽子多少钱?Howmucharethoseblacktrousers?那些黑色的裤子多少钱?询问价格常用疑问句型Howmuch...?意为“……多少钱?”其同义结构:What’sthepriceof...?What’sthepriceofthepen?这支钢笔的价格是多少?基数词仔细观察例句,体会并写出基数词的构成规律。1.Ihavefourpens,fivepencils,sixerasersandtwelvebooks.(1～12的基数词无规律)2.Thirteenboysandeighteengirlsareintheclassroom.(十三到十九,七个词词尾都有teen)3.Twentyandthirtyisfifty.(从二十开始,整十位数二十到九十,八个词词尾都有ty)4.Thetrousersaretwenty-sevendollars.(表示几十几的数字,两词中间加-)1.基数词的表达法数 字基数词形式例 词0～12各自独立zero0;one1;nine9;twelve1213～193～9+重读teen结尾特殊:thirteen13;fifteen15;eighteen18一般:fourteen14;sixteen1620～90整十位数以ty结尾twenty20;thirty30;forty40;fifty50;sixty60;seventy70;eighty80;ninety90两位数(几十几)整十位数-个位数twenty-one21;thirty-five35;ninety-eight98【巧学妙记】基数词不难记,找清规律很容易,十二以内词各异;十三数到十九去,后加teen莫忘记。二十、三十……至九十,整十之后有ty;个位到十位,中间连字符(-)别忘记,十位到百位,中间and别忘记。2.基数词的用法(1)基数词只能修饰可数名词,要注意数词和名词在数上要保持一致。twocups两个杯子twentyapples二十个苹果(2)表示编号时,用“事物+基数词”。例如:ClassFour四班Room302302房间(3)表示年龄。Heisfortyyearsold.他四十岁了。(4)表示时刻。5:34读作fivethirty-four9:28读作ninetwenty-eightT-shirt,hattrousers,skirtsweater,socksshorts,shoesjacket,bagMakesentencesinthechartwiththewordsinthethreeboxes.3ayellow,greenpurple,bluebrown,redwhite,blackHowmuchis…?Howmuchare…?theyellowT-shirtthethisthatthesethosethepurplehatthisgreenskirtthatredbagthatwhiteskirttheblueT-shirtthebrownsockstheredshoestheseblueshortsthosepurplesockstheblackshorts3b1.Howmuchisthehat?_______________2.Howmuchisthebag?_______________3.HowmuchistheT-shirt?_____________4.______________________They’rethreedollars.5._______________________It’sninedollars.6.____________________It’seightdollars.It’sfivedollars.It’stendollars.It’ssixdollars.Howmucharethesocks?Howmuchisthesweater?Howmuchistheskirt?Lookatthepicturesandwritethequestionsandanswers.3cStudentA,lookatthepicturesin3bforaminuteandthencloseyourbook.StudentB,askquestions.Howmucharethesocks?Umm,they’rethreedollars.Ⅰ.用所给词的适当形式填空1.Myclothes(be)redandwhite.2.Thesetrousersaregood.I’lltake(they).3.Howmuch(be)thechicken?4.Whatcolorshe(want)?5.Idon’tknowthetwo(woman).arethemisdoeswantwomenExerciseⅡ.单项选择1.—Arethoseyourshorts?—Yes,.A.theyareB.thatisC.itisD.Iam2.Iwanttobuypants.A.aB.thisC.theseD.that3.—CanIhelpyou?—.Ineedabasketball.A.No,thanksB.Yes,pleaseC.Yes,youcanD.No,youcan’t4.Thehatisnice,butit’stooforme.Ilikeasmallone.A.smallB.bigC.dearD.cheap5.—I’lltakethisone.Thankyouverymuch.—.A.HereyouareB.You’rewelcomeC.Thankyou,tooD.Notthanks同学们，这一课学习的单词你们都掌握了吗？现在大家来检验一下，点击下面的视频开始听写吧！
