新目标七年级上册Unit7How much are these pants教案(3)

adv. 每一个 for or to every one： They cost one shilling each. 它们每个价格为一先令。They were given two each. 他们每人拿（或分）到两个。

2. afford

vt.1. 买（付，经受）得起 have enough money for something： At last I can afford a watch. 我终于买得起一只手表了。I could not afford so much money for a bicycle. 我出不起那么多钱买一辆自行车。We can hardly afford to buy books and pens. 我们几乎买不起书籍和钢笔。Can you afford to lend me some money? 你能借给我一些钱吗？ I can't afford three days away from work. 我经不起三天不上班。 2. 给予；提供 supply; give： Music affords me great pleasure. 音乐使我心旷神怡。 His son's success afforded him great pleasure. 他儿子的成功使他非常高兴。I'll afford you a chance. 我将给你提供一个机会。

3. sell

vt. 1. 卖；出售；销售 give (something) to someone who pays money for it：Ann sold me her old piano. 安把她的旧钢琴卖给我了。This kind of bicycle is not sold in our shop. 我们商店不卖这种自行车。Merchants buy and sell (things). 商人买进卖出（货物）。I sold my house to Mr. A for￡1,000. 我以一千英镑的价钱把房子卖给了A先生。2. 卖出；经售 have things that you give people for money： That shop sells bread. 那个商店卖面包。

vi.1. 出售 be ready to sell：If you are willing to sell, I'll buy.要是你愿意卖，我就买。2. 经营买卖 engage in selling： He sells for a living. 他以买卖为生。3. 销售 find buyers; be sold This dictionary sells well. 这本字典销路很好。Strawberries sell at a high price in winter. 草莓在冬季售价很高。to sell one s honor 出卖荣誉 ； to sell one's country 卖国；to sell goods at a good price 以高价出售货物

4. sale

n. 1。[U] 卖；出售 selling something： Colour television sets will be on sale here next month. 下月这里出售彩色电视机。I'll put up my house for sale.

我要出售房屋。2. [C] 减价出售；贱卖 time when a shop sells

things at lower prices than normal： Harrods is holding a summer sale this

month. 哈罗德本月将进行夏季大贱卖。3.（复数）销数 (pl.)

the amount sold： Sales of tobacco have gone down. 烟草销量已经减

少。4. 销路 a chance to sell; a demand：These articles have a good sale. 这些货品销路很好。The sales were enormous. 销路很大。

IV. Grammar studies—数词

表示数目多少或顺序多少的词叫数词，数词分为基数词和序数词。表示数目多少的数词叫基数词；表示顺序的数词叫序数词。

一、基数词

1. 基数词写法和读法： 345 three hundred and forty-five；

2. 基数词一般是单数形式，但下列情况，常用复数： a. 与of 短语连用，表示概数,不能与具体数目连用, 如scores of people 指许多人；b.在一些表示"一排"或"一组"的词组里；如：They arrived in twos and threes.他们三三两两的到达了。c 表示"几十岁"； d. 表示"年代"，用 in +the +数词复数；e. 在乘法运算的一种表示法里，如：3 x 5 = 15

Three fives is (are) fifteen.

二、序数词

序数词的缩写形式： first---1st, second---2nd , thirty-first---31st

三、 数词的用法

1. 倍数表示法

a. 主语+谓语+倍数（或分数）+ as + adj. + as： I have three times as many as you.我有你三倍那么多。b. 主语+谓语+倍数（分数）+ the size (amount，length…) of…

The earth is 49 times the size of the moon.地球是月球的49倍。c. 主语+谓语+倍数（分数）+ 形容词（副词）比较级+ than…： The grain output is 8 percent higher this year than that of last year. 今年比去年粮食产量增加8%。d. 还可以用by+倍数，表示增加多少倍： The production of grain has been increased by four times this year.今年粮食产量增加了4倍。

2. 分数表示法

构成：基数词代表分子，序数词代表分母。分子大于1时，分子的基数词用单数，代表分母的序数词用复数：1/3 one-third ； 3/37 three and thirty-sevenths