It was Sunday, so most shops were closed.
Because, it was Sunday, most shops were closed.
He went to prison because (as) he had killed a man.
He had killed a man, so he went to prison.
It was raining , still the barbecue party was a success.
OR, Though it was raining, the barbecue party was a success.
He is rich and famous, still (yet) he is not happy.
Though he is rich and famous, he is not happy.
She loves music, but (yet or still) she never goes to a concert.
Though she loves music, she never goes to a concert.
