| 词组 | an |
| 释义 | an You use a and an when you are talking about a person or thing for the first time. A and an are called the indefinite article. You only use a and an with singular count nouns. The second time you refer to the same person or thing, you use the. She picked up a book. The book was lying on the table. After weeks of looking we eventually bought a house. The house was in a small village. You can describe someone or something using a or an with an adjective and a noun, or with a noun and a qualifier. His brother was a sensitive child. He seemed a worried man. The information was contained in an article on biology. I chose a picture that reminded me of my own country. Note that you do not omit a or an in front of a noun when the noun refers to someone's profession or job. For example, you say 'He is an architect'. You do not say 'He is architect'. He became a schoolteacher. She is a model and an artist. ◊ 'a' or 'an'? You use a in front of words beginning with consonant sounds and an in front of words beginning with vowel sounds. Then I saw a big car parked nearby. ...an empty house. You use an in front of words beginning with 'h' when the 'h' is not pronounced. For example, you say 'an honest man'. You do not say 'a honest man'. ...in less than an hour. ...an honest answer. An is used in front of the following words beginning with 'h': heir, heiress, heirloom, honest, honorary, honour, honourable, hour, hourly You use a in front of words beginning with 'u' when the 'u' is pronounced (like 'you'). For example, you say 'a unique occasion'. You do not say 'an unique occasion'. He was a University of London law student. They could elect a union member. A is used in front of the following words: ubiquitous, unanimous, unicorn, unification, uniform, uniformed, uniformity, unifying, unilateral, unilateralist, union, unique, unisex, unit, united, universal, universe, university, uranium, urinal, urinary, urine, usable, usage, use, used, useful, useless, user, usual, usually, usurper, utensil, uterus, utilitarian, utility, utopian You use an in front of an abbreviation when the letters are pronounced separately and the first letter begins with a vowel sound. Benn resigned from the Government, though remaining an MP. There has been an SOS out for you for three days. ◊ 'a' meaning 'one' A and an are used to mean 'one' in front of some numbers and units of measurement. See entries at ↑ |
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