少年に

to the boy

→ 少年
phrase Uncommon #14,059
to the boy 少年 means “boy” or “young boy,” and に marks the recipient or target of an action. Depending on context, 少年 can also refer to a young male more generally.
JA: 私は少年に本をあげました。
EN: I gave the boy a book.

ルーシー少年に近づいてきて少年の上に手を置いた

Lucy approached the boy and placed her hand on his head.

僕はその貧乏な少年になけなしの金を与えた

I gave the poor boy the little money I had.

少年にあげるとか少年に

Like, give it to a boy? To a boy?

— 鶴は翔んでゆく (1957)

彼はその少年になけなしの金をやった

He gave the boy the little money he had.

彼は本を読んでいる少年に近付いた

He approached the boy who was reading a book.

隣に住んでいる少年に聞いてみよう

Let's ask the boy who lives next door.