Tham khảo sách 'a practical english grammar _ thomson & martinet', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 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 . 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
