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Moon7296 Posted 12 years ago
Grammar

structure

Ellipsis.
Either theory could be employed to describe, with great accuracy, the falling of an apple, but Newton's would be much easier to use. On the other hand, for the claculations necessary for the satellite-based global positioning system (GPS) that helps you navigate while driving, Newton's theory would give the wrong answer, and so Einstein's must be used.

Q) There's no subject and the verb in the underlined part. How should I take it, in particular "for?"
  

Top answer

moon7296 There's no subject and the verb in the underlined part. There is no underlined part.

  • moon7296 There's no subject and the verb in the underlined part.
  • There is no underlined part.
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5 Answers
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moon7296There's no subject and the verb in the underlined part.
There is no underlined part.
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On the other hand, for the claculations necessary for the satellite-based global positioning system (GPS) that helps you navigate while driving, Newton's theory would give the wrong answer, and so Einstein's must be used.
Sorry, the above is the underlined part.
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What you have here is: "Either theory could...to use. On the other hand, for ______ , Newton's theory would...so Einstein's must be used." In the blank you have the words, "the calculations necessary...navigate while driving", but this is like saying simply, "for GPS positioning, Newton's theory...Einstein's must be used.", which the words "GPS positioning" filling the blank.
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Hi,
Thank you for answering my question.
But it's difficult to understand.

Doesn't GPS stand for "Global Positioning System?"
Anonymous "for GPS positioning, Newton's theory...Einstein's must be used.", which the words "GPS positioning" filling the blank.
Then, how come "GPS" comes with "positioning
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moon7296Sorry, the above is the underlined part.
It is just a fronted prepositional phrase: On the other hand, Newton's theory would give the wrong answer for the calculations necessary...

How come "GPS" comes with "positioning?"— Some people do that kind of thing: repeat one of the words of the acronym. I myself am guilty of it

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