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  1. keannu's Avatar
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    #1

    This is where

    What does this This is wheremean? Is it like "this is (the place) where"? Even if it is so, I can't get it.
    37)Youíll see a good example of science in action every time a police car with its siren blaring passes you in the street. Everyone knows that the sound changes as it passes you. Itís not that the siren changes its tune but it is because of something known as the Doppler Effect.This is where the sound waves coming from moving objects get squashed or stretched depending on whether something is moving toward or away from you.

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    #2

    Re: This is where

    'This is where...' = 'This is the phenomenon by which...'

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    #3

    Re: This is where

    not a teacher

    Here, "this is where" means "this is the process/situation in which".
    This sort of usage is defined here, #3: http://www.macmillandictionary.com/d...american/where

    PS. Just beaten by Rover. His meaning is probably more accurate than mine in this case.

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