定义是作者为了更好地表达思想,在文章中对一些重要的概念、难懂的术语或 词汇等所作的解释。这些解释提供的信息具有明确的针对性,利用它们猜测词义比较容易。
例如:Kinetic energy is the energy of moving particles. Kinetic enegry 可能是生词,由定义可知,表语是说明主语性质内容的。所以kinetic energy就是运动粒子的能量。
再如Typhoons are cyclones,storms with strong winds rotating around a low-pressure center.如果cyclones是生词,推断该词义的线索就是其后面的解释绕低气压中心形成的暴风雨由此我们可知cyclones的意思是绕低气压中心形成的暴风雨。
在这种解释中定义句的谓语动词多为:be, mean, deal with, be considered, to be, refer to, be called, be known as, define, represent, signify, constitute等。
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