| 释义 |
a, aA, a /eɪ / noun [countable, uncountable] (plural As, A's, a's /eɪz /)- the first letter of the English alphabet英语字母表的第一个字母◆“Andy” begins with (an) “A.”Andy 一词以字母 A 开头。
- the highest grade given for a test or piece of work（学业成绩） A 级，优◆I got an A on my essay.我的论文得了优。
 ●earn / get straight A'sto receive the grade A (= the highest grade) in all of your classes（成绩）获得全优
🔑aa /ə ; strong form强读式 eɪ / ( an /ən ; strong form强读式 æn /) indefinite article HELP The form an is used before a vowel sound.元音前用 an。- one一（个）◆I'll have a cup of coffee.我要一杯咖啡。◆an apple and a pear一个苹果和一个梨
- used when you are talking about something in general, not one particular example of it（泛指某物，而非确指其中的某一个）◆A lion is a dangerous animal.狮子是一种猛兽。
- used with someone's name to show that the speaker does not know the person（与人名连用，表示说话者不认识此人）◆There's a Ms. Mills here to see you.这里有位叫米尔斯的女士想见你。
- used for showing that someone or something is a member of a group, class, or profession（表示某个群体、阶层或职业中的一员）◆She's a Muslim.她是个穆斯林。◆Their car's a Volvo.他们的车是沃尔沃牌的。◆She's a senator.她是参议员。
- used with some expressions of quantity（与表示数量的词语连用）◆a lot of money许多钱◆a few cars几辆轿车
- used when you are talking about prices, quantities, and rates（表示价格、数量或比率）每一◆They cost 50¢ a pound.它们的价钱是每磅 50 分。◆He was traveling at about 80 miles an hour.他当时正以大约 80 英里的时速行进。 SYN per
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