Climbing Mt. Everest sounds at once completely exciting and terribly dangerous.

A word pair can use similar or different comparisons, which always appear together in a sentence.

Comparisons indicate similarity or difference, both kinds of comparisons can be formed using word pairs.

Can you summarize what you’ve understood in the above steps?

Choice A is incorrect. The phrase "sounds not" is not a valid word pair for comparison because "sounds" is a verb, while "not" is an adverb or a negation particle. Word pairs for comparison typically involve two elements with similar grammatical functions or meanings, making "sounds not" an incompatible combination.

sounds not

Choice B is incorrect. "Only exciting" is not a suitable word pair for comparison because "only" conveys exclusivity or limitation, while "exciting" denotes thrill or enthusiasm. The contrast in their meanings makes a meaningful comparison challenging, as "only" restricts, while "exciting" expands or enhances experiences.

only exciting

Choice C is correct. "Not only, but also" is a word pair used for emphasis and comparison. It introduces two elements, highlighting that the second element is as significant or noteworthy as the first. This construction adds depth to statements, emphasizing the inclusion of both aspects for a more comprehensive understanding.

not only, but also

Choice D is incorrect. The phrase "not only exciting" lacks a clear point of comparison, making it incomplete for effective comparison. To create a meaningful comparison, there should be a contrasting element or alternative option explicitly mentioned. Without a specific context or comparison partner, the phrase remains ambiguous and doesn’t convey a comparative relationship.

not only exciting

Correct sentence

The word pair in the given sentence that shows comparison - not only, but also

Option

C

Can you summarize what you’ve understood in the above steps?