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		Grammar and Linguistics > head noun     
			
		 head noun 
		
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 KHAWLA ALZIOD
 
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							| head noun 
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							| Hello everyone , Could anyone help me to check if this sentence is grammatically correct or not? 
 We learn things by heart which is not effective . 
 I wanted to know whether the use of "is not "  correct or should I  use "are not " . |  23 May 2012      
					
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 mariec
 
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							| "is not effective" is correct as we are talking about the act of learning things by heart |  23 May 2012     
					
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 naheddarfi
 
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							| put a comma after heart that �s it 
 
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 MoodyMoody
 
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							| Grammatically, "which" means "heart" in the original sentence. Mariethe �s rephrasings sound much better to me. Or you could use "memorize" instead of "learn by heart." |  23 May 2012     
					
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 yanogator
 
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							| Actually, "which" refers to the whole clause, so, as naheddarfi said, it just needs a comma. However, I agree that Mariethe �s wordings are clearer.   Bruce |  23 May 2012     
					
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 cunliffe
 
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							| You guys can �t see the wood for the trees. We learn things by heart, which IS effective.  |  23 May 2012     
					
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