I have not been out of this city since a year .....is this statement correct ???
							
							April 25, 2017
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													User 15
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											No. You should say 'from a year' rather than 'since'.   https://helloenglish.com/questions/34556/How-to-use-since-and-from 
											
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											As it is in the present perfect.. Use 'for' as Preposition.. Then it will be right. (since_ point of time, for_ period of time.) 
											
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