What are examples of setting, plot, dialogue, theme, and style in Beowulf?

Like many complicated narrative works, the Old English
poem Beowulf consists of such elements as plot, setting, theme,
style, and dialogue. Examples of these elements occur throughout the poem, but below are
some specific examples (from the Seamus Heaney
translation):

• The themes
  of bravery and warfare are emphasized in the poem’s very first lines,
  which declare that the Danish people

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and the kings who ruled them had courage and
greatness.

We have heard of those princes’ heroic
campaigns.
(2-3)

• The
  stylistic technique of alliteration, which is by far the most common
  stylistic trait of Old English poetry, appears in such lines as the following: “as his
  powers waxed and his
  worth was proved” (8). As this
  example illustrates, alliteration involves the repetition of consonant
  sounds.


• The main plot (or
  story-line) of two thirds of the poem begins when the poem starts to focus on Hrothgar:
  “The fortunes of war favored Hrothgar” (64).


• An important
  element of the setting of the poem involves the gloomy
  landscape in which the monster Grendel spends much of his time. The poet describes
  him

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haunting the marches, marauding round the
heath

and the desolate fens . . . .
(103-04)

• Dialogue
  appears when a thane guarding the coast of Denmark challenges Beowulf and his men to
  identify themselves soon after they have
  landed:

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“What kind of men are you who
arrive

rigged out for combat in your coats of
mail,

sailing here over the sea
lanes

in your steep-hauled boat?
(237-40)

When Beowulf answers him, true dialogue has
begun.