1. Passive voice: "The prospect of receiving rewards and recognition can significantly enhance motivation." - This sentence uses passive voice to emphasize the effects of rewards and recognition on motivation.
2. Compound sentence: "Positive reinforcement, such as certificates, badges, or the promise of career advancement, provides tangible goals that individuals can aim for." - This compound sentence effectively uses a list to expand on the types of positive reinforcement.
3. Complex sentence: "Moreover, recognition from peers and superiors can amplify this effect, validating the learner's efforts and boosting their drive to continue learning." - This complex sentence connects multiple ideas, showing cause and effect, and enhancing the depth of the explanation.