Do you know what couch potato means? Well, in America, the word is now often used. You see, in America, many people often spend their free time sitting on a sofa watching TV. As there are many channels(频道) to choose from, the TV can be quite interesting and very addictive(使人上瘾的). One may sit and watch TV for hours and hours without stop! Well, these people who do nothing all day except watching TV are called couch potatoes.

    In America, while watching TV, most people often sit still with eyes looking right into the TV set. Also because these people are addictive to TV, they don't take exercise and usually get very fat. So in many ways, these people look like real potatoes! Well, because they look fat, and watch TV on a couch, they are all called couch-potatoes. Now you know what a couch-potato means. Then next time if you see someone watching TV too long, just say, "What a couch-potato!"