Question

select the linking verb and the predicate noun or predicate adjective.
in 1985, at the age of seventeen, boris becker became the youngest winner of the mens wimbledon singles tennis tournament.
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Explanation:

A linking verb connects the subject to a word that describes or renames it. In the sentence, "became" is the linking verb as it links "Boris Becker" to the noun phrase that describes his role. The predicate noun (or noun phrase) here is "the youngest winner of the men's Wimbledon singles tennis tournament" which renames or describes the subject. The adjective "youngest" modifies the noun "winner", but the overall phrase functions as a predicate noun phrase.

Answer:

Linking verb: became; Predicate noun phrase: the youngest winner of the men's Wimbledon singles tennis tournament