彼はもう少年ではない。の英語

He is no longer a boy.

He is far from young.

He is not the boy who came here yesterday.

He cannot be young.

He's but a boy.

He's not as young as he was [as he used to be].

He is not the boy who came here yesterday.

He is not the shy boy he used to be.

He cannot be young.

He can't be young.

He is not yet of age―still under age―a minor.

He is young.

He is not the boy who came here yesterday.

He is under age―not yet of age―a minor―in his minority―in his nonage.

He must be a good boy.

He is not the idle boy he was.

He looks young.

He is no longer the shy boy he was.

He's barely of age.

The boy does not dare to do so.

He is young for his years.

He is not eighteen yet.

He's getting along (in years).

He is a senior.

He is an elder.

He is not what he was ten years ago.

He is in his prime―in the prime of his manhood―in the prime of his life.

He's much too young.

He fancies himself still young.

He's young for his years.