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Unit 7 How much are these socks 基数词和how much的用法1How much is the hat？这顶帽子多少钱？Its five dollars.5美元。2How much are these socks？这些短袜多少钱？Theyre two dollars.2美元。3Two dollars for one pair and three dollars for two pairs.两美元一双，三美元两双。4Ill take two pairs.我买两双。1基数词数词分为_和_。表示数量多少的词叫基数词，如one, two, three, four等。表示顺序的词叫序数词，如first, second, third等。100以内基数词的表达法：(1)onetwelve：拼写和读音各不同，无规律可循，应逐一记忆。(2)thirteennineteen：表示“十几”，构成特点是词尾都是“_”，单词有两个重音。 thirteen，fifteen和eighteen需特殊记忆。(3)twentyninety：表示“几十”，构成特点是词尾都是“_”。(4)“几十几”的表达方法：整十位数连字符个位数。如：21：twentyone28：twentyeight35：thirtyfive 44：fortyfour56：fiftysix 67：sixtyseven72：seventytwo 83：eightythree99：ninetynine(5)“一百”可以用a hundred或one hundred来表示。需要注意的是，hundred之前有具体数字修饰时，hundred用单数形式。但当hundred之后有of时，hundred一定要用复数形式，且前面不再有数词，即hundreds of。(6)基数词的用法：表示人或物的数量，放在名词之前。如：I have five basketballs. 我有五个篮球。表示编号时，用“名词基数词”。如：Class Nine 九班， Room 301 301房间表示年龄，基数词放在year(s) old (可省略)的前面。如：My brother is twenty (years old). 我哥哥20岁了。表示时间。如：Its ten oclock. 十点钟了。用于数学计算。Two and three is five.二加三等于五。Whats fortysix and twentytwo?46加22等于多少？Its sixtyeight.等于68。注意：基数词作主语时，谓语动词用第三人称单数形式。如：Two and six is eight. 2加6等于8。2how much的用法提问价格可用句型：How muchis/aren.？(be与n.的单复数一致)/Whats the price ofn.？其回答常用：Its/They are基数词价格单位如：How much are these trousers?这些裤子多少钱？They are 12 dollars. 12美元。How much is this Tshirt?这件T恤衫多少钱？Its 20 yuan. 20元。注意：使用“Whats the price ofn.？”这一句型时，无论被询问的商品表示单数还是复数，be动词都用is，不能用are。其答语也只能是“Its”.写出下列数字的英文形式10_2.3_312 _ 4.13 _514 _ 6.15 _ 719 _ 8.20 _930 _ 10.40 _ 1180 _ 12.90 _1344 _ 14.99 _ 1537 _ 16.216 _.汉译英1两支铅笔_2三十名学生_3三条裤子_4十九个西红柿_5二十美元_6四十元_.用适当的基数词完成下面的等式(数字用英语写出)1foureight_2seveneight_3thirteenseven_4fourteensixteen_5seventyfourteen_6eightysixteen_7sixtythirteen_8eightyforty_9fortyeighttwelve_10ninetyfive_.单项填空()1.Eleven and twelve is _AelevenBthirtyoneCtwentythree Dtwentyone()2.How much_ the sweater?_ fifty yuan.Ais; Its Bare; TheyreCis; Theyre Dare; Its()3.There are _ students here.Afourtyfour BfourfourtyCfortyfour Dfourforty()4.These shirts_ only 5 dollars. Do you want_？Aare; it Bis; oneCare; one Dis; it()5._ is the TV?Its 2，000 yuan.AHow many BHow muchCHow about DHow big()6.These trousers _ very beautiful. How much _ they?Aare; are Bare; is Cis; are Dis; is ()7._ water do you need?Just one glass. AHow many BHow far CHow much DHow long()8.How much _ these hamburgers?_ ten dollars. Aare; Its Bare; Theyre Cis; Its Dis; Theyre()9.How much _ the skirt and the sweater?Ais Bare ChasDhave()10.Mike has _ volleyballs. Atwenty three Bfiftythird Cforteen Dforty.根据句意及首字母提示补全单词1How much are the pen and the dictionary?T_ yuan. The pen is 8 yuan and the dictionary is 22 yuan. 2Im fourteen years old. My brother is one year older (比大) than me. So my brother is f_ years old. 3They have nine baseballs, five basketballs and four volleyballs. They have e_ balls in all.4There are sixtyfive teachers in our school, twenty men teachers and f_ women teachers. 5T_ is after eleven and before thirteen.按要求完成下列各题，每空一词1How much are the shoes? (写出答语)_ _ 20 dollars. 2How much is the green sweater? (改为同义句)_ _ _ _ the green sweater?3The shirt is 30_dollars(对画线部分提问)_ _ is the shirt?4Whats seven and five? (写出答语)_ _. 5The jacket and the shirt are 80_yuan. (对画线部分提问)_ _ _ the jacket and the shirt?详解详析【语法探究】1基数词； 序数词(2)teen(3)ty【实战演练】.1.zero2.three3.twelve4.thirteen5fourteen6.fifteen7.nineteen8twenty9.thirty10.forty11eighty12.ninety13.fortyfour14.ninetynine15.thirtyseven16two hundred and sixteen.1.two pencils2.thirty students3three pairs of trousers4nineteen tomatoes5.twenty dollars6forty yuan.1.twelve2.fifteen3.twenty4thirty5.fiftysix6.sixtyfour7fortyseven8.forty9.thirtysix10ninetyfive.1.C2.A3.C4C主语shirts为复数，故be动词用are；泛指其中的一件用one指代。5B6Atrousers是复数，谓语动词应用are；第二空的主语是they，所以谓语动词用are。7Chow many意为“多少”，用于提问可数名词的数量；how far意为“多远”，用于对距离提问；how much意为“多少”，用于提问不可数名词的数量；how long意为“多长；多久”，用于对物体的长度或一段时间提问。water是不可数名词，应用how much来提问。故选C。8B9B主语是the skirt and the sweater，故谓语动词用are。10D.1.Thirty2.fifteen3.eighteen4fortyfive5.Twelve.1.They are2Whats the price of3How much4.Its twelve5How much are
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