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a , an 
A or an is the indefinite article. It is used at the beginning of noun groups which refer to only one person or thing. The form an is used in front of words that begin with vowel sounds.  
1  det You use a or an when you are referring to someone or something for the first time or when people may not know which particular person or thing you are talking about. 
DET sing-n 
A waiter entered with a tray..., He started eating an apple..., Today you've got a new teacher taking you..., I manage a hotel.  
2  det You use a or an when you are referring to any person or thing of a particular type and do not want to be specific. 
DET sing-n 
I suggest you leave it to an expert..., Bring a sleeping bag..., I was waiting for a bus.  
3  det You use a or an in front of an uncount noun when that noun follows an adjective, or when the noun is followed by words that describe it more fully. 
DET n-uncount with supp 
There was a terrible sadness in her eyes...  
4  det You use a or an in front of a mass noun when you want to refer to a single type or make of something. 
DET n-mass 
Bollinger `RD' is a rare, highly prized wine.  
5  det You use a in quantifiers such as a lot, a little, and a bit. 
DET in quant 
I spend a lot on expensive jewelry and clothing..., I've come looking for a bit of advice.  
6  det You use a or an to refer to someone or something as a typical member of a group, class, or type. 
DET sing-n 
Some parents believe a boy must learn to stand up and fight like a man.  
7  det You use a or an in front of the names of days, months, or festivals when you are referring to one particular instance of that day, month, or festival. 
DET sing-n 
The interview took place on a Friday afternoon...  
8  det You use a or an when you are saying what someone is or what job they have. 
DET sing-n 
I explained that I was an artist..., He was now a teacher and a respectable member of the community.  
9  det You use a or an in front of the names of artists to refer to one individual painting or sculpture created by them. 
DET n-proper 
Most people have very little difficulty in seeing why a Van Gogh is a work of genius.  
10  det You use a or an instead of the number `one', especially with words of measurement such as `hundred', `hour', and `metre', and with fractions such as `half', `quarter', and `third'. 
DET sing-n 
...more than a thousand acres of land., ...a quarter of an hour...  
11  det You use a or an in expressions such as eight hours a day to express a rate or ratio. 
num DET sing-n 
Prices start at £13.95 a metre for printed cotton..., The helicopter can zip along at about 150 kilometres an hour.  


Dictionnaire Collaboratif     Anglais-Anglais
game hunter n. a person who hunts wild animals HUNTING

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