Do you know what couch-potato means? Well, in America, the word is now often used. The American couch-potato becomes maybe even a part of American tradition. You see, in America, many people often spend their free time sitting on a couch（沙发）watching TV. As there are many programs to choose, the TV can be quite interesting and very addictive（上瘾的）. One may sit and watch TV for hour and hour without stop. They do nothing else but watch TV. These people are called couch-potatoes.

    In America, when one watches TV, he is most often sitting on a couch. While watching TV, most of these people look so frozen that they almost look dead. Everyone is sitting still（安静地） with eyes looking right intothe same black box. Also because these people are addictive to TV, they don't exercise and usually get very fat. So in many ways, they look like real potatoes. Well, because they look so still and fat, and watch TV on a couch, they are all called couch-potatoes.

    Now you know what couch-potatoes means. The next time if you see someone watching TV too long, just say, "What a couch-potato!"