Final answer:
Conjunctions are used to join groups of words, phrases, or sentences to create compound subjects, predicates, or objects.
Step-by-step explanation:
Conjunctions are used to join groups of words, phrases, or sentences. They function to connect words or groups of words that have a similar grammatical function within a sentence.
For example:
'I like tea and coffee.'
'She ran but he walked.'
In both examples, the conjunctions 'and' and 'but' are used to join words or phrases together to create compound subjects, predicates, or objects.
Learn more about Conjunctions in English grammar