Jia Jia can both sing and dance.

Jia Jia can not only sing, but also dance.

Conjunction is a function word used to connect words, phrases or sentences and express a certain logical relationship.

Extended data:

Usage of conjunctions:

Conjunctions are more virtual parts of speech than adverbs and prepositions. It is used to connect words, phrases, clauses, sentence groups and even paragraphs. It has pure connectivity, no modification and does not act as a sentence component.

Generally speaking, many conjunctions are developed from adverbs and prepositions; Many adverbs and prepositions are developed from verbs.