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I see no error. Do you think theres something wrong? </p>
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<p>I agree with you. Former and latter can be plural. </p>
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<p>Despair is being used as a transitive verb here; that the performance of the chief executive would ever improve, as a noun clause, is its object. The dictionaries I referenced declare the transitive use of despair obsolete. Whether that makes the sentence ungrammatical is based on ones standards of correctness, I suppose. I dont think the SAT would test an esoteric, possibly archaic sense of a word. Is this from an official SAT test?</p>
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<p>Because there is a comma after out, which introduces a prepositional phrase, there should be a comma at the end of the prepositional phrase. So the sentence should be:</p>
<p>To stand in Persepolis in modern Iran and look out, as Darius the first must have done**,** at the immense sweep of fields and mountains is to grasp the vastness of the ancient Persian Empire.</p>
<p>As I mentioned a couple posts ago, though, I dont believe an answer will ever be wrong if the correction is merely to input a comma. Unless this question belies my experience with the SAT on that matter, Im tempted to also question whether this is from an official SAT test. </p>
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<p>Its kind of clunky, but yeah, its grammar is fine. It having swept almost unchecked over great distances is an absolute phrase, which is formed by preceding a participial phrase (having swept almost unchecked over great distances) with the word the participle modifies (It). The sentence would be more eloquent if It were omitted, producing a simple participial phrase; the meaning would be preserved.</p>
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<p>Yep, this demonstrates the same concept of the absolute phrase. It works more effectively here because the participial phrase (depending, initially at least, on the thickness ) modifies the thickness of the iceberg rather than the subject of the clause itself (An iceberg) as in the sentence you wrote.</p>