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Thread: omitting 'by'

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  1. Member
    Student or Learner
    • Member Info
      • Native Language:
      • Polish
      • Home Country:
      • Poland
      • Current Location:
      • Ireland

    • Join Date: Oct 2010
    • Posts: 118

    Question omitting 'by'

    I'm wondering if 'by' is crucial in the following sentences:

    You can achieve your goal working hard.
    You can achieve your goal by working hard.


    You can learn it reading books.
    You can learn it by reading books.

    Thanks in advance.

  2. VIP Member
    Interested in Language
    • Member Info
      • Native Language:
      • American English
      • Home Country:
      • United States
      • Current Location:
      • United States

    • Join Date: Dec 2015
    • Posts: 14,650

    Re: omitting 'by'

    The second is marginally possible. The first isn't.
    I am not a teacher.

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