A dog is a common animal. You can find it almost everywhere. But a dog is a special animal too， because it has given to man help that other animals haven't. It often lives with people at home as a pet （寵物） or as a guard. As a result， most people like dogs.
    In my childhood， my father had a white dog. It was a bright （1） dog. One day， when I went to school， followed by my dog， I forgot to take my pencil-box. It would be too late for me to go home for it. When the dog saw my worry [the signs of worry on my face] （2）， it went home. After a while， with the pencil-box in its mouth， the dog came to our school. It was really my friend， but it was a short time for the dog to stay with me [before we had to part] （3）。 However， I'll never forget it.
    In a police station， a dog is a bright （4） “police-man”。 It can tell different smells. In the country and town， most people feed [ keep ] （5） a dog and let it guard their homes when they areout.
    We Chinese people often say， “Don't be a dog that catches mice.” This means， don't do things which are not your business. In fact， dogs can catch mice. It is a good thing， isn't it？So dogs are really our true friends. We should take good care of them while they help us.
    陜西省耀縣中學(xué)高三（1）班 王小軍
    評 語
    狗，是人類最為親近的動物之一。文章用舉例法說明了狗的可愛和作用，文中描寫的一些往事不能不讓我們?yōu)楣返摹吧平馊艘狻钡谋绢I(lǐng)而感嘆。文中某些語言上的不足之處點(diǎn)評修改如下：
    （1）、（4）據(jù)Longman詞典，bright可以有clever的意思，但一般是指人或人的言行等，如a bright child/idea，我們在選用詞語時，應(yīng)該注意語境。
    （2）原文有些別扭，故改之。
    （3）原文語法沒有錯誤，改后強(qiáng)調(diào)“分離”，語氣上較好些。
    （5）feed只是指“給……食品”，其實“養(yǎng)狗”可以用keep a dog.