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1、单元语法小专题(Grammar Focus)语法精讲一、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”。例如：How much is the Tshirt？这件T恤衫多少钱？Its 68 yuan.68元。How much is the milk？牛奶多少钱？Its 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：“Theyre价格”。例如：How much are these shoes？这些鞋子多
2、少钱？They are 18 dollars.18美元。How much are those dresses？那些连衣裙多少钱？Theyre 80 yuan.80元。【拓展】询问物品的价格还可以用句型“Whats 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 ”。例如：Whats the price of that book？那本书多少钱？Its fifteen yuan.15元。Whats the price of the books？那些书多少钱？Its fifty yuan.50元。二、基数词的记忆规则及用法1基数词
3、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的拼写需特殊记忆。(3)2090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，eigh
4、ty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“”。例如：twentyone，fortytwo，seventyeight(5)100可以写成a hundred或one hundred。一般hundred不用复数形式。例如：two hundred，three hundred2基数词的用法：(1)表示年龄，基数词放在years old之前。例如：He is twelve years old.他十二岁。(2)用来表示人或物的数量，放在名词之前。例如：I have three balls.我有三个球。(3)表示顺序、编号等，放在名词之后。例如：Im in Clas
5、s Four.我在四班。(4)用来计算。例如：Two and six is eight.二加六等于八。Whats forty and twenty？40加20等于多少？Its 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 ninetysix.6加90等于96。语法精练.用is，are，its或theyre填空。1How much is that green bag?Its $25.2How much are these red shoes?Theyre $45.3How much is this tape player?Its $15
6、0.4How much is the icecream?Its $5.5How much are those bananas?Theyre ten yuan.按要求完成下列句子，每空一词。6These socks are two_dollars. (对画线部分提问) How much are these socks?7How much is the rice？(改为同义句) Whats the price of the rice?8Sixtytwo and thirtyeight is _one_hundred(对画线部分提问) What is sixtytwo and thirtyeight
7、?9That shirt is 20 dollars.(用shorts作主语改写句子)Those shorts are 20 dollars.10How much is this computer？(改为复数句)How much are these computers?.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?Its 98 yuan.12玲玲的妈妈39岁。Linglings mother is thirtynine/39 years old13他需要19个篮球。He needs nineteen/19 basketballs14迈克在8班。Mike is in Class Eight15这双白色的鞋子多少钱？88元。How much is this pair of white shoes?Its 88 yuan.
