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1、七年级上册Unit 7 How much are these clothes? Grammar Focus 语法专项讲解和练习语法精讲如何询问价格询问价格的句型为“How much is/are.?”.1. “How much is.?”常用来询问单数名词或不可数名词的价格,对此问句进行回答时常用句型为“Its+价格.”。2.“How much are.?”常用来询问复数名词的价格,对此问句进行回答时常用句型为“Theyre+价格.”。如:How much are these shoes? 这些鞋子多少钱?They are 18 dollars.它们18美元。询问物品的价格还可以用句型“Wha
2、ts the price of .?”。使用这一句型时,不管所询问的物品是单数还是复数，be动词都用is,其答语都用“Its.基数词的记忆规则及用法1.基数词的记忆规则;(1)012这13个数字独立成词,要单独记忆。它们分别是:zero,one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve。(2)1319都是以“个位数+teen”构成，fourteen, sixteen, seventeen, nineteen为个位数直接加-teen构成;thirteen, fifteen, eighteen的拼写需
3、特殊记忆。(3)2090整十位数的基数词由相应的个位数后加-ty构成。sixty, seventy, ninety为个位数直接加-ty构成;twenty，thirty, forty, fifty,eighty的拼写需特殊记忆。(4)2199的两位数的表达是整十位数加个位数,中间加上连字符“-”。如:twenty-one, forty-two。(5) 100可以写成a hundred或one hundred.一般hundred不用复数形式。如:two hundred, three hundred。2.基数词的用法:(1)表示年龄,基数词放在year(s)old之前。He is twelve ye
4、ars old.他12岁。(2)用来表示人或物的数量,放在名词之前。I have three balls.我有3个球。(3)表示顺序、编号等,放在名词之后。Im in Class Four.我在4班。(4)用来计算。Whats forty and twenty? 40加20是多少?Its sixty.是60。(5)基数词作主语时,谓语动词用单数形式。Six and ninety is ninety-six.6加90是96。【教材典句】1.“这顶帽子多少钱?”“它5美元。”(P39)_ _ _ the hat?_ five dollars.2.“这些短袜多少钱?”“它们2美元。”(P39)_ _
5、 _ these socks?_ two dollars.语法精练一、用is, are, its或 theyre填空。1.How much _ that green bag?_ $25.2.How much _ these red shoes?_ $ 45.3.How much the ice-cream?_ $ 5.4.How much _ those bananas?_ ten yuan.二、按要求完成句子。1. These socks are two dollars.(对画线部分提问)_ _ _ these socks?2. Sixty-two and thirty-eight is o
6、ne hundred.(对画线部分提问)_ _ sixty-two and thirty-eight?3. How much is the rice?(同义句转换)_ _ _ _ the rice?4. How much is this computer?(改为复数句)How much _ _ _？三、根据汉语提示完成下列句子。1.“那件蓝色的夹克衫多少钱?” “98元。”_ _ _ that blue jacket?_ 98 yuan.2.玲玲的妈妈39岁。Linglings mother is _ _ _.3.迈克在8班。Mike is in _ _.4.三双袜子仅5美元。 _ are _
7、 $5 _ _ _.参考答案：教材典句1.How much is; Its 2.How much are; Theyre语法精练一、用is, are, its或 theyre填空。1.is; Its 2.are; Theyre 3.is; Its 4.are; Theyre6二、按要求完成句子。1.How much are 2.What is 3.Whats the price of4.are these computers三、根据汉语提示完成下列句子。1.How much is; Its 2.thirty-nine/39 years old 3.Class Eight4.Socks;only;for three pairs
