Adjectives describe nouns, and adverbs describe verbs, adjectives, or other adverbs. Always ensure that you are using the correct one for describing a particular word. The best way to correct the underlined portion of the sentence above is: "more grandly than the king."

Because the underlined portion of the sentence is discussing the way in which an action was done, an adverb is required rather than an adjective in this sentence. The correct version of this sentence reads: "The car was moving quickly—in fact, it was going so fast as to be wildly unsafe.

In the sentence above, the word "poor" is modifying the word "feel," which is a verb. The word "poor", which is an adjective, should be changed into an adverb. The best way to correct the underlined portion of the sentence above is: "I feel poorly today"

Adjectives describe nouns, and adverbs describe verbs, adjectives, or other adverbs. Always ensure that you are using the correct one for describing a particular word. The best way to correct the underlined portion of the sentence above is: "I vehemently hate the way that cats behave:"

"Explanations" is a count noun (one that can be counted) as opposed to a mass noun - it requires, therefore, "many" instead of "much."

Adjectives describe nouns, and adverbs describe verbs, adjectives, or other adverbs. Always ensure that you are using the correct one for describing a particular word. The best way to correct the underlined portion of the sentence above is: "but China can run more quickly over short distances."

Adjectives describe nouns, and adverbs describe verbs, adjectives, or other adverbs. Always ensure that you are using the correct one for describing a particular word. The best way to correct the underlined portion of the sentence above is: "The man's bright smile"

If the man's action of smiling were being described then the adverb "brightly" would be correct.

Adjectives describe nouns, and adverbs describe verbs, adjectives, or other adverbs. Always ensure that you are using the correct one for describing a particular word. The best way to correct the underlined portion of the sentence above is: "Girls tend to be able to move more quickly than boys,"

Since "fast" cannot become an adverb ("fastly" is not a word in English), the correct form here is "more quickly," since an adverb is necessary (the manner in which girls and boys are "moving" is being described). Note that a coordinating conjunction should never follow a semicolon.

Adjectives describe nouns, and adverbs describe verbs, adjectives, or other adverbs. Always ensure that you are using the correct one for describing a particular word. The best way to correct the underlined portion of the sentence above is: "I think that Mithridates was a fascinating character,"

Since what is being described here is a "character" (which is a noun) the adjective form is appropriate rather than the adverbial form. Note also that coordinating conjunctions should never immediately follow semicolons.

Adjectives describe nouns, and adverbs describe verbs, adjectives, or other adverbs. Always ensure that you are using the correct one for describing a particular word. Since it is the way in which the dogs "treat" (verb) their owners is being described, the best way to correct the underlined sentence above is, "Dogs and cats both make excellent pets, but dogs treat their owners more affectionately."