How does Shakespeare use the Banquo ghost scene in Act 3 to entertain and instruct his audience? (in macbeth)

his tongue, i believe, was bloody and hanging out of his mouth.

he looked as if he were hungry.

he has several wolf-like qualities; a gray coat, sharp claws and yellow fangs.

those eyes made me feel, dear reader, like the end was near.

as i reached for a stick, he moved to the other side of the hill.

panting and hungry, he looked at me, a defenseless human and he snarled.

well i said my prayers, however, he simply turned and limped off. 

if there's no multiple choice questions, i would say

because his violence took on the form

of carrying his pillow in his teeth; "

"anything they put in for furniture

hope i could ! have a good day!