在美国的商店里，鸡蛋按 a dozen 卖，一盒十二个。面包是 a loaf of bread。牛奶是 a gallon of milk，一大桶。
a dozen、a loaf of、a gallon of：一打、一条、一加仑
试一试: Wei: It's so hot, and ten people are coming. Maya: Then let's get ___ water. 看图，选出 Maya 会说的话。 (a glass of / a gallon of / a loaf of) 答案: a gallon of — 大热天要来十个人，所以他们需要很多水：a gallon of water。
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发音
例句
a dozen
These eggs are three dollars a dozen.
a loaf of
This loaf of bread is still warm.
a gallon of
There's a gallon of milk in the fridge door.
a pound of、a can of、a bag of：一磅、一罐、一袋
肉和奶酪按重量卖：a pound of chicken。汽水是 a can of soda，土豆是 a bag of potatoes。
试一试: Wei: How much cheese do we need for the pizzas? Maya: Let's get ___ cheese. That's enough for three pizzas. 选出 Maya 会说的话。 (a pound of / a dozen / a gallon of) 答案: a pound of — 奶酪按重量卖，所以 Maya 回答 a pound of cheese。
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发音
例句
a pound of
I need a pound of chicken.
a can of
Do you want a can of soda?
a bag of
A bag of potatoes is on the floor.
rice、cheese、butter：米饭、奶酪、黄油
购物清单上再加三样吃的：rice、cheese 和 butter。
试一试: Maya: The corn is hot now. Wei: Great. Where's the ___? 看图，选出 Wei 会说的话。 (rice / butter / cheese) 答案: butter — 热玉米上那块软软的黄色东西是黄油：butter。
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发音
例句
rice
We have rice with vegetables tonight.
cheese
Can I have a cheese sandwich?
butter
I like bread and butter.
sugar、salt、oil：糖、盐、油
sugar 让食物变甜。salt 撒在鸡蛋和薯条上。在锅里做饭要用 oil。
试一试: Wei: The popcorn is ready. Maya: Great. Can I have the ___? 看图，选出 Maya 会说的话。 (oil / sugar / salt) 答案: salt — 那位女士在往爆米花上撒盐，所以 Maya 要的是盐：salt。