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Maybe somebody can help me: i think its "the dog looks hungry" but my teacher says its "the dog looks hungrily" whats right???
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The dog looks hungry.
The dog looks hungrily at the bone.
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The dog looks hungry. The dog appears hungry. The dog is hungry. The dog seems hungry.

The verbs in these sentences are linking verbs, and require an adjective to modify the subject.
The hungry dog. Others are lean, cold, hot, sad, fat, old etc.

Compare with the dynamic (action) verbs in these sentences. You can add an adverb to modify the action of the verb..
The dog looks at the bone.
The dog jumps for the bone.
The dog runs towards the bone.

The dog looks sadly at the bone.
The dog jumps hungrily for the bone.
The dog runs eagerly towards the bone.

Note that the verb look has two different meanings. The first is linking; the second dynamic.
1) to appear or seem. The dog looks hungry =. The dog seems hungry.
2) to direct the eyes at something: He looks at himself in the mirror.

If there is no object phrase in the sentence (in the mirror, at the bone, towards the north), then a native speaker assumes that look is linking, not dynamic. So the adjective is correct in your sentence: The dog looks hungry.
If there is an object phrase, then the verb look is dynamic, and the adverb form is correct. The dog looks quizzically at himself in the mirror.
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The do is hungry which verb

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