dangling modifier

[mengta]

She lives in a beautiful house, designed by her sister.

is this a dangling modifer sentence?

thanks

[Mister Micawber]

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No, but the comma should be deleted. Designed by her sister, she lives in a beautiful house -- here, the participial clause is dangling.
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[mengta]

87 years ago our fathers brought forth a new nation, conceived in liberty and dedicated to the proposition that all men are created equal.

so am i right that there shouldnt be a comma before "conceived in liberty..."?
thanks

[Mister Micawber]

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No! That's the Gettysburg Address-- don't mess with Abraham Lincoln's punctuation (and there's a comma after liberty, too).
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[mengta]

yes, that's the Gettysburg Address.

so why is there the comma before "conceived"?
thanks

[Mister Micawber]

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It is a pause to consider the nonrestrictive nature of the following nonfinite modifiers.
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[mengta]

i'm really appreciate your answer. But since i'm not a native speaker, i would love you to explain it more. i've been confused by the kind of sentence.

Thanks a lot

[Mister Micawber]

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Sorry, Mengta. Since you were asking about the correctness of the comma, I assumed that you knew about restrictive (defining) and nonrestrictive (non-defining) clauses. Restrictive clauses do not take commas; non-restrictive ones require setting off with commas.

Restrictive modifiers are essential for the meaning of the sentence and description of the noun modified; non-restrictive modifiers add 'extra' information, since the noun is already identified through other means. Please see your grammar book for further explanation.

In the Gettysburg Address, we need no identification of the country Abe is speaking of. The clause beginning with 'conceived' goes on to give extra information that he wants to mention.

In your original sentence, 'designed by her sister' is an intrinsic part of the definition of the house, so I felt that the comma was improper.

Others may have differing opinions.
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