his back

son dos

→ his
phrase Uncommon #11,959
son dos Peut être littéral, comme dans « his back hurts » = « son dos lui fait mal ». Dans l’expression « turn one’s back on someone/something », cela veut dire « tourner le dos à ».
EN: He hurt his back while lifting a box.
FR: Il s’est fait mal au dos en soulevant une boîte.

He felt severe pain in his back and legs.

Il ressentait de fortes douleurs au dos et aux jambes.

People used to laugh at him behind his back.

Avant, les gens se moquaient de lui dans son dos.

The old man had his back to me.

Le vieil homme me tournait le dos.

He turned his back on the old traditions.

Il a tourné le dos aux vieilles traditions.

The sun has burnt his back.

Le soleil lui a brûlé le dos.

Tom has problems with his back.

Tom a des problèmes de dos.

Get off his back!

Fichez-lui la paix !

What kind of manager turns his back on his own staff?

Quel genre de manager tourne le dos à ses propres employés ?

— Still Life (2006)

People would make fun of him behind his back.

Les gens se moquaient de lui dans son dos.

So you saw his back.

Vous avez donc vu son dos.

— Bicycle Thieves (1948)

He is fighting with his back against the wall.

Il se bat dos au mur.

People were making fun of him behind his back.

Les gens se moquaient de lui dans son dos.

Come to think of it, he tried to keep his back towards me.

À bien y réfléchir, il essayait de me tourner le dos.

— Double Indemnity (1944)

He turned his back on the old tradition.

Il a tourné le dos à la vieille tradition.

She massaged his back.

Elle lui massait le dos.

Say it to his face, not behind his back.

Dis-le-lui en face, pas dans son dos.

He felt a pain in his back.

Il ressentait une douleur dans le dos.