这条裤子多少钱？How much are these pants？

（价钱）多少how much

 出售on sale

价格优惠at very good prices

一双a pair of

看起来不错Look nice

是红色的,in red

 运动员清一色地穿着红色运动服。The players were all dressed alike in red sports suits,

 这件物品我们还有红色和黑色的。We also have it in red or black,

 我喜欢用红墨水画画。I like to draw the picture in red ink,

大减价on big sale

这些短袜多少钱？  How much are these socks?

六美元They're six dollars,

您需要什么帮助吗？  Can I help you?

 嗯，是的。Yes，please,

 这个怎么样？   How about this one?

 它看起来很好。It looks nice,

我买了。I'll take it,

 我买了。I'll take them,

给您。Here you are,

你喜欢毛衣吗？Do you like sweaters?

 你想要什么颜色？What color do you want?

 蓝色Blue,

一双两美元，两双三美元。Two dollars for one pair and three dollars for two pairs,

快来买我们的折价衣服。Come and buy your clothes at our great sale!

我们有二十美元一件的紫色裙子。  We have skirts in purple for only twenty dollars,

这辆小汽车多少钱？  What's the price of the car?

 西红柿掉价儿了。The price of tomatoes has come down,

 石油的价格已经上涨了。the price of oil has gone up,

the price of是问价格作主语，单数。  

 你有多少苹果？ How many apples do you have?

  你想要多少水？How much water do you want?

 Socks,袜子, shoes,鞋, pants,裤子,trousers,裤子等都是成双成对的物品，一般以复数形式出现，作主语时谓语动词用复数形式。但它们和a pair of （一双、一副或一对）连用作主语时，谓语动词要与pair,在数上一致。   

   这条裤子是汤姆的。   The pants are Tom's,

   这条裤子是汤姆的。 The pair of pants is Tom's,

英美等西方国家的货币单位像dollar,（美元）、cent,（美分）、pound,（英镑）、penny,（便士）、shilling,（先令）等有单复数变化。

我国的货币单位元、角、分单复数一样。    

元yuan,

角jiao,

分fen,

表示货币等度量衡单位的词在句中作主语时，谓语动词用单数形式。   

  10美元对他来说是相当多的钱。  Ten dollars is quite a lot of money for him,

我能帮助你吗？       Can I help you?

What can I do for you?  

May I help you?  

Is there anything I can do for you ?

 我想要他帮助我 ，I want him to help me,

给你。  Here you are,

我买了。  I'll take it,

谢谢。 回答感谢的用语： Thank you,

Thank you very much,

Thanks,

Thanks a lot,

Many thanks,

没关系，不用谢。That's all right ,

 That's OK,   

Not at all,

You're welcome,

快来买，华兴服装大减价。 Come and buy your clothes at Huaxing's great sale!

待售   for sale

 出售；on sale

我们有价格很便宜的毛衣。    We have sweaters at a very good price,

以合理优惠的价格 at a very good price

for的用法    供  用，

 这个苹果是给我的吗？      Is this apple for me?

 这儿有你妈妈的一封信。    Here is a letter for your mother,

for的用法  作  用（表用途）      

 你需要运动包吗？      Do you need bags for sports?

 我需要一个装牛奶的杯子。    I need a cup for milk,

for的用法 就   而言，对于  来说      

 午饭我喜欢汉堡和沙拉。      For lunch, I like hamburgers and salad,

女孩子们可以买到各种颜色的T恤衫。    For girls, we have T-shirts in all colors,

for的用法 以    的价格（表交换、价格）      

 你可以买到每双只卖5美元的袜子。    You can buy socks for only five dollars each,

亲自       for oneself

你亲自来看看吧。 Come and see for yourself,