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		Grammar and Linguistics > present perfect or simple past?     
			
		 present perfect or simple past? 
		
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 samahdaba1983**
 
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							| present perfect or simple past? 
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							| Hi everyone,  I am trying to explain the difference between the simple past and the present perfect to my students , I told them that one  difference is in time ( specific or un specific) but  a sentence confused me , so could you please help me explaining why we use simple past in this sentence: -Have you ever hurt yourself badly? No , I haven �t luckily. I sprained my ankle once in a basketball match , but nothing more serious than that. ( in this sentence we don �t have a specific time so why we use the past simple not the present perfect ?  can we say that both are correct?) |  23 Jan 2013      
					
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 florimago
 
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							| In my opinion simple past should be used in this sentence . The action (sprain my ankle) is finished without any consequences in the present time . The speaker �s ankle is fine now |  23 Jan 2013     
					
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 douglas
 
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							| "once" indicates the specific time -- once (on August 12th,2012 for example) |  23 Jan 2013     
					
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 yanogator
 
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							| As Flori said, it is an action that was completed in the past, so simple past is the correct tense. Douglas is also correct about "once" indicating a specific (but not specified) time. Actually, "in a basketball game" counts as indicating a specific time, also, so you could say "I sprained my ankle in a basketball game."   Bruce |  23 Jan 2013     
					
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 samahdaba1983**
 
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							| Excuse me , I didn �t understand what you mean by " once indicates a specific ( but not specified ) time. I know that once refers to an unspecific time = at a time in the past. Another thing I want to know : Does the ocassion make specific? ( in a basketball match) so we say for example : I met him in a party, not I have met him in a party   ?   |  23 Jan 2013     
					
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