1. More can serve as an adverb to modify the comparative degree.
2. Adverbs can modify both adjectives and other adverbs.
3. The specific usage depends on the type of verb the adverb is accompanying.
4. If the main verb is an intransitive verb, "carefully" should be used to modify it.
5. However, if the verb is a semi-auxiliary verb or the "be" verb, "careful" should be used for modification.
