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Anonymous Posted 15 years ago
Grammar

If --- then

Hi,

Which is correct?

If X is Y, then Z is Y and K is T.

or

If X is Y, then Z is Y, and K is T.

That is, I am asking whether is a comma before "and."

Thanks!
  

Top answer

-- strict choice

— Mister Micawber

  • -- strict choice
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6 Answers
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If X is Y, then Z is Y and K is T.-- commonsense choice

If X is Y, then Z is Y, and K is T.-- strict choice
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Hi, thanks for the reply.

What do you mean by "strict choice"?

If this is a research paper, should I use the "strict choice"? Is that what you mean?
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Strictly, a comma must separate independent clauses if there is a coordinating conjunction. However, if the clauses are multiple, short and simple, then commas can seem cluttered. I myself would omit the comma.
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Mister MicawberIf X is Y, then Z is Y and K is T.-- commonsense choice
If X is Y, then Z is Y, and K is T.-- strict choice
I think that the common sense choice is a grammatical and logical one. The lack of the comma after 'Y' in the "...then Z is Y and K is T" emphasises the fact that the consequence of the 'X is Y' is an occurrence of two e
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It is logical certainly but not grammatical; the rule of independent clauses applies.
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