If your JV partner insists on providing forms in french. I would suggest finding and contracting the work out to a bi lingual Virtual Assistant who can translate the terms and the agreement into french for you, this is going to be cheaper than hiring a law firm to do so. After that, ask for referrals for a bi lingual lawyer who can confirm the agreement remains the same. Calculate these costs into the JV closing costs, you shouldn`t be held solely responsible for the cost of this.
Hope it helps,
Dan