For diagramming practice, here are some sentences that use subjects, verbs, objects, modifiers, appositives, objective complements, and verbal and prepositional phrases.

1. Throw me the ball. [solution]
2. Alex was a teenage marvel, a real genius. [solution]
3. John and David played soccer. [solution]
4. Chris kicked the goal and won the game. [solution]
5. That made the opposing goalie angry. [solution]
6. Their coach was angry too. [solution]
7. Leaving the game, our coach was ecstatic. [solution]
8. Coaching our team was the high point of his life. [solution]
9. He helped us to learn the game. [solution]
10. The best way to learn is to practice diligently. [solution]