第五个最常见的词，也就是英语中不定冠词a,an 类似作用的um, uma, um用在阳性单数名词前，uma用在阴性单数名词前。

05. a, an / um, uma

a. I’ve got an idea! ／ Tive uma idéia! 我有个主意！

b. A moment, please. ／ Um momento, por favor. 请稍等。

c. How much is a hamburger with fries? ／ Quanto é um hambúrguer com fritas? 汉堡加薯条多少钱？

（顺便贴点麦当劳里各种食品的英汉对照）

大冷饮(雪碧,芬达,可口可乐) Large Drink

标准冷饮(雪碧,芬达,可口可乐) Regular Drink

巧克力奶昔 Chocolate Shake

草莓奶昔 Strawberry Shake

香草奶昔 Vanilla Shake

汉堡 Hamburger

吉士汉堡 Cheeseburger

双层汉堡 Double Hamburger

两个吉士汉堡,热红茶 2 Cheeseburgers,Hot Tea

吉士汉堡,奶昔 Cheeseburger, Shake

双层吉士汉堡 Double Cheeseburger

巨无霸 Big Mac

麦香鱼,咖啡 Filet-O-Fish, Coffee

汉堡,标准薯条,标准饮料 Hamburger, Regular Fries, Regular Drink

麦香鸡,热红茶 McChicken Sandwich, Hot Tea

两个汉堡,标准冷饮 Hamburgers, Regular Drink

麦香鱼 Filet-O-Fish

麦香鸡汉堡 McChicken Sandwich

麦辣鸡翅 Spicy Chicken Wings

热红茶 Hot Tea

热巧克力 Hot Chocolate

咖啡 Coffee

标准橙汁 Regular O.J.

大杯橙汁 Large O.J.

鲜奶 Milk

苹果派 Apple Pie

巧克力圣代 Chocolate Sundae

菠萝圣代 Pineapple Sundae

大薯条 Large Fries

标准薯条 Regular Fries