Answer:
i play tennis, and before a match it's customary to practice with your opponent. it gives you a chance to see how to the other player plays the game. plus if you're practicing it's not competitive, it's cooperative. so you aren't trying to beat each other at practice.
Grammar errors DO create confusion and will detract from the message the author is trying to provide (unless the errors are intentional and are meant to contribute to the meaning of the written work in very rare cases).
Hope this helps! :)
<span>Puck is a powerful supernatural creature, capable of circling the globe in 40 minutes or morphing unsuspecting mortals in a deep fog. Also known as Robin Good fellow, Puck would have been familiar to a sixteenth-century English audience, who would have recognized him as a common household spirit. But he's also a "puck," an elf or goblin that enjoys playing practical jokes on mortals. Although he is more mischievous than malevolent, Puck reminds us that the fairy world is not all goodness and generosity.</span>
The writer's world is another way of saying; "The scene that is being set for the story to be told. Time, Location, Characters, Mood, Situation, etc.
For example, If you were telling a story about Dungeons and Dragons, perhaps you would mention that the main characters, Corlon, a Fighter and Esmerelda, a Sorceress are Trapped in a Dragon's Cave guarded by a Large one-eyed Cyclops and a Very Large Hungry Green Dragon. And so on.
