Gerunds are words that are formed with verbs but act as nouns. Present participles do not act as nouns. Instead, they act as modifiers or complete progressive verbs. To find gerunds in sentences, just look for a verb + ing that is used as a noun.
Example :
1. The ballerina taught us dancing.
2. Apologizing to me isn’t enough this time.
3. She is afraid of flying.
4. They are capable of doing hard work.