七年级英语上册 Unit 7 How much are these socks语法

语法精讲

two hundred，three hundred

一、如何询问价格 2．基数词的用法

询问价格的句型为：How much is/are…？ (1)表示年龄，基数词放在years old之前。例如： 1．How much is…？常用来询问单数名词或不可数He is twelve years old.他十二岁。 名词的价格，对此问句进行回答时常用句型为：It's＋(2)用来表示人或物的数量，放在名词之前。例如： 价格。例如： I have three balls.我有三个球。

—How much is the T－shirt？这件T恤衫多少钱？ (3)表示顺序、编号等，放在名词之后。例如： —It's 68 yuan.68元。 —How much is the milk？牛奶多少钱？ —It's 59 yuan.59元。 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：They're＋价格。例如： —How much are these shoes？这些鞋多少钱？ —They are 18 dollars.18美元。 —How much are those dresses？那些连衣裙多少钱？ —They're 80 yuan.80元。 【拓展】询问物品的价格还可以用句型What's 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It's…。例如： —What's the price of that book？那本书多少钱？ —It's fifteen yuan.15元。 —What's the price of the books？那些书多少钱？ —It's fifty yuan.50元。 二、基数词的记忆规则及用法 1．基数词的记忆规则 (1)0—12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)13—19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的拼写需特殊记忆。 (3)20—90整十位数的基数词由相应的个位数字后加－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)21—99的两位数的表达是整十位数加个位数，中间加上连字符“－”。例如： twenty－one，forty－two，seventy－eight (5)100可以写成a hundred或one hundred。一般hundred不用复数形式。例如：

I'm in Class Four.我在四班。 (4)用来计算。例如： Two and six is eight.二加六等于八。 —What's forty and twenty？40加20等于多少？ —It's sixty.等于60。 (5)基数词作主语时，谓语动词用单数形式。例如：

Six and ninety is ninety－six.6加90等于96。语法精练 Ⅰ.用is，are，it's或they're填空。 1．—How much is that green bag?

—It's $25. 2．—How much are these red shoes? —They're $45. 3．—How much is this tape player? —It's $150.

4．—How much is the ice－cream? —It's $5.

5．—How much are those bananas? —They're ten yuan. Ⅱ.按要求完成下列句子，每空一词。

6．These socks are two__dollars．(对画线部分

提问)

How much are these socks? 7．How much is the rice？(改为同义句) What's the price of the rice? 8．Sixty－two and thirty－eight is

__one__hundred．(对画线部分提问) What is sixty－two and thirty－eight? 9．That shirt is 20 dollars.(用shorts作主语改写句子)

Those shorts are 20 dollars. 10．How much is this computer？(改为复数句) How much are these computers? Ⅲ.根据汉语意思完成句子，每空一词。

11．——那件蓝色的夹克衫多少钱？ ——98元。

—How much is that blue jacket? —It's 98 yuan. 12．玲玲的妈妈39岁。

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Lingling's mother is thirty－nine/39 years old．

13．他需要19个篮球。

He needs nineteen/19 basketballs． 14．迈克在8班。

Mike is in Class Eight．

15．——这双白色的鞋多少钱？ ——88元。

—How much is this pair of white shoes? —It's 88 yuan.

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