How can i differentiate between verbals and verbs in a sentence?

The three verbals— gerunds, infinitives, and participles—are formed from verbs, but are never used alone as action words in sentences. Instead, verbals function as nouns, adjectives, or adverbs. These verbals are important in phrases. The gerund ends in -ing and functions as a noun.

Explanation:

you have approval for this story

explanation:

and also the mystery girl it might be someone that she might know in her school

in our power to make a world happy - to teach mankind the art of being so - to a character hitherto unknown - and to have, as it were, a new creation intrusted to our hands, are honors that command reflection, and can neither be too highly estimated,