Grammar: Chapter 17 - Gerunds. Affirmative Gerunds: 1. Exercisin g is important. 2. Budgeting carefull y is difficult. 3. Budgeting your mone y is not easy. Negative Gerunds : 1. Not exercisin g is bad for you. 2. Not budgeting carefull y is a mistake. 3. Not budgeting your mone y is a mistake.