Read the excerpt from "Morte d'Arthur” by Alfred, Lord Tennyson.But, as he walk’d, King Arthur panted hard,Like one that feels a nightmare on his bed

The phrase “Like one that feels a nightmare on his bed” is a simile because it compares King Arthur to someone experiencing a nightmare. This comparison helps readers picture how distressed and strained he feels as he pants hard. It does not tell us what his nightmare was about.

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