與 useful 類似的英文單字是 practical（聽發音），也是形容詞用法，這個英文單字可以用來形容各種＂實用的、實際的、確實的＂事物，例如前面說實用的家電英文也可以說成 practical appliances、實用的設備英文是 practical device。
實用英文造句練習
English is a very useful language.英文是非常實用的語言。
Mike does not think the juice machine is a very useful home appliances, at least he does not like.
麥克不認為果汁機是很實用的家電產品，至少他不喜歡。
Smart phones are actually very useful, especially for mobile work.
智慧型手機其實非常實用，特別是用於移動的工作。
In the future, owning a car may no longer be practical, because autopilot technology will be popular.
在未來，擁有一輛汽車可能不再實用，因為自動駕駛技術將會普及。
This espresso machine is very practical, you can make espresso or latte coffee.
這台義式咖啡機非常實用，可以製作 espresso 或拿鐵咖啡。
Raincoats in rainy days is particularly useful.
雨衣在下雨天顯得特別實用。
Only two floors of the house to install the elevator seems not very practical.
僅有兩層樓的房子安裝電梯似乎很不實用。
This monocular camera is very practical, many of our projects have to rely on it to shoot good-looking photos.
這台單眼相機非常實用，我們的很多專案都要靠它拍出好看的照片。
This dress is very expensive but very practical, especially in public, wear it allows you to show self-confidence.
這套洋裝雖然昂貴卻很實用，特別是公開場合，穿上它可以讓你展現自信。
In Taiwan, motorcycles are a very practical means of transport, because the city of Taiwan is very crowded, parking spaces are also few.
在台灣，摩托車是非常實用的交通工具，因為台灣的都市很擁擠，停車位也很少。