<p>Which one is better and why?
During the summer months, several thousand people a day visit the park, which is known for its waterfalls and rock formations.
Several thousand people a day visit the part during the summer months known for its waterfalls and rock formations.</p>
<p>ID
Maya Madera [proudly] wore her sister's [most popular invention, a watch] for winter campers [that flashes the temperature in] lighted numerals and sends out a loud alarm when [pressing a button.] </p>
<p>SI
In neighborhoods throughout the United States, one can encounter hundreds of different rope-jumping games, [........]
-each with its own rules
-each having their own rules</p>
<p>This one places “known for its water falls and rock formations” too far away from the clause’s antecedent, park. It sounds like it’s the summer months that are known for [their] waterfalls and, well, that doesn’t make sense. And notice the their I placed in brackets; months are plural so if any attributes were to follow, the correct pronoun would have to be “their.”</p>
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<p>That makes it sound like the watch is pressing a button. It should be “when a button [on the watch] is pressed”</p>
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<p>“Each” follows its antecedent, so in this case, the possessive pronoun would have to agree with the plural “rope-jumping games.”</p>
<p>Each is singular when used in a “each of [plural noun]” sense. In other words, when it acts as a pronoun</p>
<p>Each of the cows weighS over 30 tons.
Each costs a million bucks</p>
<p>When it follows its antecedent, the verb has to agree with each’s antecedent. In structures like that, each becomes an adjective. The sentence in the OP is of this type of structure.</p>
<p>The cows weigh 31 tons each.
The shoes cost a million bucks each.
or
The shoes each cost a million bucks.</p>
<p>I disagree with antonioray. “each with its own rules” should be the answer because “each” as a pronoun is always singular, and “its” must agree with that singularity. “each” is not being used adjectively there; it is being used as a pronoun. (Also, in antonioray’s final example sentences, “each” is being used as an adverb, not as an adjective.)</p>
<p>In my last example, each is modifying shoes and not “cost.” How can it?</p>
<p>From Webster’s Grammar, Usage, and Punctuation</p>
<p>“When the adjective each follows a plural subject, the verb agrees with the subject: The rooms each have seperate thermostats.” (lifted verbatim)</p>
<p>What exactly are we debating right now? My only uncertainty at the moment is in distinguishing between the adjectival and adverbial forms of “each” (the sources seem to offer differing thoughts on this), a matter which does not seem to be of any applicable purpose.</p>
The rooms each have… uses “each” as an adjective and not as an adverb modifying “have.”
…shoes each cost… could be rewritten as "each of the shoes costS; when it follows a plural noun, each carries a plural verb (not making this up, just reciting Webster’s and Alfred et al.)</p>
<p>I don’t doubt that (e.g., “Each dog is cold.”).</p>
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<p>Your earlier example sentences supposedly of “each” as an adjective are in fact of “each” as an adverb:</p>
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<p>It seems that when “each” immediately succeeds the subjective noun, it is considered an adjective; but when it more nearly succeeds the verb, it is an adverb. So in your “room” sentence, “each” is indeed an adjective. In any case, correctly labeling whether it is being used as an adverb or adjective should not affect subject-verb agreement. </p>
<p>Returning to the question that prompted this, I stand by my initial response that “each” is a pronoun there and, thus, that all agreement must be singular.</p>
My only uncertainty at the moment is in distinguishing between the adjectival and adverbial forms of “each” (the sources seem to offer differing thoughts on this), a matter which does not seem to be of any applicable purpose.</p>