Don't cop an attitude.
態度悪いぞ
Don't count your chickens (before they are hatched).
((諺))取らぬ狸たぬきの皮算用
Don't cry.
泣かないで
Don't [Never] do that again.
二度とそんなことをするな
Don't do your homework just anyway.
宿題をいいかげんにやってはならない
Don't drink and drive.
飲んだら乗るな
Don't eat so much meat.
肉をそんなに食べるな
Don't eat so much sweet stuff.
そんなに甘いものを食べてはいけません
Don't even think about [of] inviting me to the wedding.
私を結婚式に招待するなんてごめんだ
Don't ever repeat this to anybody.
絶対他言無用