His behavior is worthy of respect.
- Son comportement force le respect.
I can't stand his behavior anymore.
- Je ne peux supporter son comportement plus longtemps.
We were surprised by his behaviour.
- Nous avons été surpris par son comportement.
I am fed up with his behaviour.
- J'en ai marre de son comportement.
Aren't you ashamed of the way you behaved?
- N'as-tu pas honte de ton comportement ?