agreement (grammar)

In languages, agreement is a form of cross-reference between different parts of a sentence or phrase. Agreement happens when one word changes in form depending on which other words it is being related to.For example, one does not say I is in English, because is cannot be used when the subject is I. The word is is said not to agree with the word I. This is why the grammatical form is I am, even though the verb still has the same function and basic meaning.
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