When three or more things are being compared, it is best to use the superlative form of the adjective or adverb in question. In the case of "good" the comparative construction is "best," and the example sentence is correct as written. If the speaker were comparing him- or herself to another specific chess player, then the comparative would be needed, e.g. "I am a better chess player than Tom."

When three or more things are being compared, or there is an indefinite comparison (such as one teacher out of a whole school group), it is best to use the superlative form of the adjective or adverb in question. In the case of "bad" the comparative construction is "worst," and it is correct in the sentence. It is reasonable to assume, in this instance, that there are more than one other teacher in the "whole school."

In the above sentence, the narrator is comparing his/her favorite book to all books, ever. Therefore, because three or more things are being compared, the superlative construction must be used. The best way to write this sentence is, "I think that my favorite book is the best book of all time."

When comparing two (and only two) things, one must always use the comparative construction. In this example, two things are being compared: how quickly the narrator has run before, and how quickly he or she is intending to run the day of the meet. As such, the best way to write the sentence is: "The day of the track meet, I was prepared to run more quickly than I ever had before." When one thing is being distinguished from a list of three or more things, a superlative construction is required.

When comparing three or more things, you must use the superlative construction of the adjective or adverb in question. "Greater" is the comparative construction and would only be correct if the actor in question were being compared to one other actor. In this case, the superlative form of "great" is "greatest" which is the best option to replace the underlined portion of the sentence above.

When comparing three or more things, including in the instance of an indefinite comparison like the one in the example sentence, you must use the superlative construction of the adjective or adverb in question. In this case, the superlative form of "easy" is "easiest" which is the best option to replace the underlined portion of the sentence above.

When comparing three or more things you must use the superlative construction of the adjective or adverb in question. In this case, the superlative form of "bad" is "worst" which is the best option to replace the underlined portion of the sentence above. "Absolute" is a fairly reliable indicator that a superlative might be coming, as this is a word that will commonly precede a distinction of the "best" or "worst" of something.

When comparing three or more things you must use the superlative construction of the adjective or adverb in question. In this case, an incorrect version of the superlative form was used. The superlative form of "stressful" is "most stressful" which is the best option to replace the underlined portion of the sentence above.

When you are comparing only two things, you must use the comparative construction of the adjective or adverb in question. When you are comparing three or more things, you must use the superlative construction instead. The best way to correct the underlined portion above is: "the swiftest in the race?"

When you are comparing only two things, you must use the comparative construction of the adjective or adverb in question. When you are comparing three or more things, you must use the superlative construction instead. The best way to correct the underlined portion above is: "I would have to choose Jeffrey because he is more beautiful than William."