Final answer:
The author introduces Beowulf multiple times in the story to establish his identity, highlight his lineage, and create suspense and mystery.
Step-by-step explanation:
The author introduces Beowulf three times in the story for several reasons. First, it is to establish his identity, which is important in Anglo-Saxon works. Second, it is to highlight the significance of his lineage. And finally, it is to create suspense and mystery surrounding his character.