在英语中,一个单词由一种词性转化为另一种或几种词性而词形不变的方法叫做转化法。1. 动词转化为名词Let me have a try.让我试试。They are only allowed to sell soft drinks at school.在学校里只准许他们出售不含酒精的饮料。2. 名词转化为动词He shouldered his way through the crowd.他用肩膀推开人群前进。The smell from the kitchen made his mouth water.从厨房传来的气味使他流口水。3. 形容词转化为动词We will try our best to better our living conditions.我们要尽力改善我们的生活状况。They tried to perfect the working conditions.他们努力改善工作条件。4. 形容词转化为名词He didn’t know the difference between right and wrong.他不辨是非。The old in our village are living a happy life.我们村的老年人过着幸福的生活。5. 形容词转化为副词How long have you lived there?你在那儿住多久了?6. 个别词在一定场合中可转化为名词Warm clothes are a must in the mountains.穿暖和的衣服到山区去是必须的。Life is full of ups and downs.人生有得意时也有失意时。His argument contains too many ifs and buts.他的辩论中含有太多的“如果”和“但是”。