20. In addition to simple gerund and infinitive forms, there are progressive gerund and infinitive forms, passive gerund and infinitive forms and perfect gerund and infinitive forms as well as combinations of these forms. Progressive forms are used to emphasize that an action is taking place now. Passive forms are used to emphasize that the subject of the sentence is being acted upon. Perfect gerund and infinitive forms are used to emphasize completion in both the past and the future. Study the examples below to help understand these concepts. To learn more about progressiveness, the passive voice and the perfect aspect, complete the