Do you have any knowledge of French?
- Avez-vous quelque connaissance du français ?
He has knowledge and experience as well.
- Il a la connaissance ainsi que l'expérience.
I want to make her acquaintance.
- Je souhaite faire sa connaissance.
Mr Smith is an acquaintance of hers.
- M. Smith est une connaissance à elle.
He is acquainted with the modern history of France.
- Il a des connaissances en histoire moderne de la France.
He is acquainted with the custom.
- Il a connaissance de la tradition.