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Asaisaio Posted 12 years ago
Grammar

do sth. using/by using sth?

(1). We usually calculate rates of return on the funds [using] units of percent per year.
(2). We usually calculate rates of return on the funds [by using] units of percent per year.
Which is correct between these two sentences? Thanks in advance!
  

Top answer

I think I would use "in". I would also consider changing "calculate" to "express".

  • I think I would use "in".
  • I would also consider changing "calculate" to "express".
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7 Answers
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I think I would use "in". I would also consider changing "calculate" to "express".
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Thanks for your answer. I was wondering if this pattern, "I do sth. using sth." is correct? or adding a "by" before "using"? Thanks in advance!
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asaisaioThanks for your answer. I was wondering if this pattern, "I do sth. using sth." is correct? or adding a "by" before "using"? Thanks in advance!
Both are in common use. I think "by" is usually redundant though. At least, I can't think of any example where it is necessary.
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Here are some examples copied from the dictionary:
Fill in gaps by using short, upward strokes of the pencil.
Give your upper body a workout by using handweights.
Trevor helped police by using his psychic powers.
I'll start off by using this piece of wood.
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asaisaioHowever, I can't find any example that uses "using" alone.
Google search will furnish you with as many examples as you require.
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Yes, I admitted that there are many sentences with "using" alone, but they don't have predicate in them. For example, "A recognizing system using BP algorithm", doesn't have any verb. I was wondering if there must be a "by" in the sentence if it has a predicate in it? Thanks in advance!
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No, not necessarily. For example, "Fill in the gaps (by) using short, upward strokes of the pencil" works just as well without "by" as with it. Actually, I prefer it without.

I said earlier that I couldn't think of an example where "by" was necessary, but it occurred to me later that certain sentences may be ambiguous without it. For example, in "They caught the drivers using mobile phone

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