on his face

A smile on his face, but what a tragedy!

Un sourire aux lèvres, mais quelle tragédie !

— Little Vera (1988)

The teacher wore a harsh expression on his face.

Le professeur avait une expression sévère sur le visage.

Tom had a smile on his face.

Tom avait un sourire aux lèvres.

Keep an eye on the reaction on his face when we bring up a price.

Observez attentivement sa réaction lorsque nous aborderons la question du prix.

He had a queer expression on his face.

Il avait une expression étrange sur le visage.

Anger showed on his face.

La colère se lisait sur son visage.

Tom fell over and landed flat on his face.

Tom est tombé et s'est écrasé sur le visage.

I saw a joyful smile on his face.

J'ai vu un sourire joyeux sur son visage.

A cold wind was blowing on his face.

Un vent froid lui fouettait le visage.

Look at the reaction on his face when we bring up a price.

Regardez sa réaction quand on évoque le prix.