alone / lonely / only --Alone means “by yourself” – there is nobody else with you: I like to take long walks alone so that I have time to think. He got up and left the restaurant, leaving me alone at the table. --Lonely means “feeling sad and isolated” – it is a negative emotion. I was lonely on my first day of class because I didn’t have any friends. She can’t stand being single; she says she feels lonely without a boyfriend. --Only means “just one” and can be used with people, objects, or actions. After the word only, we must have a person, object, or action. Dana was the only student who understood today’s English lesson. I have only one pair of sunglasses. I didn’t have a lot of money, so I only bought this T-shirt.