a是什么意思

详细释义

• 0 used before a noun to refer to a single thing or person that has not been mentioned before, especially when you are not referring to a particular thing or person -- 一（个）（用于名词前，表示未曾提及的，尤其是非特指的人、事、物）

  • I've bought a car. 我买了辆汽车。

  • She's got a boyfriend. 她交了个男朋友。

  • There was a sudden loud noise. 突然发出一声巨响。

  • What a shame that you couldn't go to the party. 你不能去参加聚会，太遗憾了。

  • I heard a child crying. 我听见有个孩子在哭。

  • Is he a friend of yours (= one of your friends)? 他是你的朋友吗？

  • She wants to be a doctor when she grows up. 她长大了想当医生。

  • This is a very mild cheese. 这是一种很清淡的奶酪。

  • Experts think the painting may be a Picasso (= by Picasso). 专家们认为这幅画可能出自毕加索的手笔。

  • Can you ride a bike? 你会骑自行车吗？

  • A cheetah can run faster than a lion. 猎豹能跑过狮子。

  • A teacher needs to have a lot of patience. 做老师需要很有耐心。

  • I only have a limited knowledge of Spanish. 我只懂一点西班牙语。

  • He has a great love of music. 他酷爱音乐。

  • There was a fierceness in her voice. 她的声音中透着股凶气。

  • Take a look at this, Jez. 杰兹，看一下这个。

  • I'm just going to have a snack. 我正要去洗个澡。

  • There was a knocking at the door. 有人敲门。

  • I'd love a coffee. 我想来杯咖啡。

  • All I had for lunch was a yogurt. 午饭我只喝了一杯酸奶。

  • a cup and saucer 一副杯碟

  • a knife and fork 一副刀叉

  • a few days 几天

  • a bit of wool 一点羊毛

  • a lot of money 很多钱

  • There's a Ms Evans to see you. 有位埃文斯女士找你。

  • Is that a Wilson over there? 那边那个人是威尔逊家的吗？

  • My birthday is on a Friday this year. 今年我的生日是个星期五。

  • It's been a very wet June. 今年6月一直都特别潮湿。

• 1 one -- 一

  • a hundred 一百

  • a thousand 一千

  • a dozen 一打

  • There were three men and a woman. 有三位男士和一位女士。

  • half a mile 半英里

  • a quarter of a kilo 1/4公斤

  • three quarters of an hour 三刻钟

  • six tenths of a second 0.6秒

  • Take one tablet three times a day. 一日三次，每次一片。

  • I swim once a week. 我每星期游一次泳。

  • She earns $100,000 a year. 她一年挣10万美元。

  • My plumber charges £30 an hour. 管子工每小时收我30英镑的维修费。

  • I pay £25 a week for my parking permit. 我的停车证费用是每周25英镑。

• 2 written abbreviation for amp noun(ELECTRICITY) -- 安（电流强度单位amp“安培”的缩写）