by his

par son

→ by
phrase Uncommon #9,627
par son Exprime l’auteur de l’action dans une tournure passive : « par ses... » selon le nom qui suit.
EN: He was helped by his brother.
FR: Il a été aidé par son frère.

If your friend is one-eyed, look him by his side face.

Si votre ami est borgne, regardez-le de profil.

He is well liked by his students.

Il est très apprécié de ses élèves.

Take him by his legs.

Prenez-le par les jambes.

— The Return (2003)

I was surprised by his sudden appearance.

Son apparition soudaine m'a surpris.

A possible abduction by his biological relatives.

Un possible enlèvement par ses proches biologiques.

— The Orphanage (2007)

The old man is always accompanied by his grandson.

Le vieil homme est toujours accompagné de son petit-fils.

She was taken in by his manners.

Elle fut séduite par ses manières.

He was raised by his grandmother.

Il a été élevé par sa grand-mère.

I was very confused by his questions.

Ses questions m'ont beaucoup perturbée.

By his surname.

Par son nom de famille.

— Perfect Strangers (2016)

You shall judge of a man by his foes as well as by his friends.

Tu jugeras un homme autant par ses ennemis que par ses amis.

We were surprised by his behaviour.

Son comportement nous a surpris.

I was surprised by his perseverance.

J'ai été surpris par sa persévérance.

The problem is complicated by his personality.

Le problème est compliqué par sa personnalité.

I would put the earth soaked by his blood.

Je recouvrirais la terre imbibée de son sang.

— All About My Mother (1999)

He was raised by his grandparents.

Il a été élevé par ses grands-parents.

I sat by his side.

Je me suis assise à ses côtés.

Watanabe seem to be carried by his project.

Watanabe semble être porté par son projet.

— Ikiru (1952)

A man can not be judged by his appearance.

On ne peut juger un homme sur son apparence.

Man live by his rep.

L'homme vit selon sa réputation.

— Malcolm X (1992)

His rival was discouraged by his triumph.

Son rival fut découragé par son triomphe.

If the guy is carefree he ends up being seduced by his mates.

Si le type est insouciant, il finit par se faire séduire par ses copains.

— Elite Squad (2007)

She was embarrassed by his sudden appearance.

Son apparition soudaine l'a gênée.