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A Practical English Grammar by Thomas & Martinet
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1 Articles and one, a little/a few, this, that
1 a/an (the indefinite article) The form a is used before a word beginning with a consonant, or a vowel with a consonant sound: a man a hat a university a European a one-way street The form an is used before words beginning with a vowel (a, e, i, o, u) or words beginning with a mute h: an apple an island an uncle an egg an onion an hour or individual letters spoken with a vowel sound: an L-plate an MP an SOS an 'x' a/an is the same for all genders: a man a woman an actor an actress a table 2 Use of a/an a/an is used: A Before a singular noun which is countable (i.e. of which there is more than one) when it is mentioned for the first time and represents no particular person or thing: / need a visa. They live in a flat. He bought an ice-cream. B Before a singular countable noun which is used as an example of a class of things: A car must be insured = All cars/Any car must be insured. A child needs love =All children need/Any child needs love. C With a noun complement. This includes names of professions: It was an earthquake. She'll be a dancer. He is an actor. D In certain expressions of quantity: a lot of a couple a great many a dozen (but one dozen is also possible) a great deal of E With certain numbers a hundred a thousand (See 349 ) Before half when half follows a whole number ll/2 kilos = one and a half kilos or a kilo and a half But 1/2 kg = half a kilo (no a before half), though a + half + noun is sometimes possible a half holiday a half portion a half share With 1/3 1/4, 1/5 etc a is usual a third, a quarter etc , but one is also possible (See 350 ) F In expressions of price, speed, ratio etc 5p a kilo £1 a metre sixty kilometres an hour lOp a dozen four times a day (Here a/an = per ) G In exclamations before singular, countable nouns Such a long queue' What a pretty girl' But Such long queues' What pretty girls' (Plural nouns, so no article See 3 ) H a can be placed before Mr/Mrs/Miss + surname a Mr Smith a Mrs Smith a Miss Smith a Mr Smith means 'a man called Smith' and implies that he is a stranger to the speaker Mr Smith, without a, implies that the speaker knows Mr Smith or knows of his existence (For the difference between a/an and one, see 4 For a few and a little, see 5 ) 3 Omission of a/an a/an is omitted A Before plural nouns a/an has no plural form. So the plural of a dog is dogs, and of an egg is eggs B Before uncountable nouns (see 13) C Before names of meals, except when these are preceded by an adjective We have breakfast at eight He gave us a good breakfast The article is also used when it is a special meal given to celebrate something or in someone's honour / was invited to dinner (at their house, in the ordinary way) but / was invited to a dinner given to welcome the new ambassador 4 a/an and one A a/an and one (adjective) 1 When counting or measuring time, distance, weight etc we can use either a/an or one for the singular: £1 = a/one pound £1,000,000 = a/one million pounds ... Show full text: 681,607 characters
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