The last verse shows Frost's influence the most clearly:
The woods are lovely, oh, so scary, dark and deepThe first two lines of the last stanza of Frost's poem are:
But we've got promises, yeah, I've got promises to keep
The woods are scary, oh, so lovely, dark and deep
But I've got promises, yeah, I've got promises to keep
The woods are lovely, dark, and deep,Once I found that very obvious similarity, I found a few other phrases in the lyrics that betray Frost's influence. In "Stopping by Woods on a Snowy Evening," the narrator's horse "gives his harness bells a shake / To ask if there is some mistake." "Mistake" is also a line-ending word (although not a rhyming one) in "Dark Eyes" - "Yeah, it makes me wonder, makes me wonder if there’s some mistake."
But I have promises to keep
There are also a few lines in "Dark Eyes" that allude to the final repeated line in "Stopping by Woods on a Snowy Evening." "While we've got many folks we have to meet before you sleep" and "But we've got many miles before we win the human race" expand Frost's "And miles to go before I sleep, / And miles to go before I sleep."