详解雅思阅读中的同义替换词汇及词组
不同词性的同义替换：
不同词性同义代换顾名思义，就是在代换时不受词性的限制，比如：obvious换成clearly; similar换成resemble等。
Example 1:
Despite substantialfunding, results (of this program) have been disappointing.
代换为：This program failedalthough they received sufficient funding.
因为把disappointing换成了failed, “although”代换了“inspite of”, 通过词的代换就会很自然的实现英文中提倡的句式多样性。
雅思阅读同义词转换二、词组的转换
词组的转换一般情况下是同义词转换的一个衍生。当一个词无法用另一个同义词到位地解释时，可能会出现用词组解释的情况。另外如果本身就是词组的形式，那么通常来讲还是会用词组的形式进行解释。
例如：
Example 1:
原文：Computers are gainingin popularity, despite their cost.
题目：Computers are morepopular than they used to be.
原文当中的gaining in popularity题目中用morepopular than they used to be作为替换。两者在意思上属于完全一致的同义转换，因此答案为TRUE。
Example 2:
原文：Biologically, aspecies becomes extinct when its last individual dies.
题目：In biological terms,a species is said to be extinct when only one individual exists.
原文当中的biologically用题目的inbiological terms作为替换。Become则由issaid to be作为替换。但是原文当中的die在题目中变成了exist, 直接相反的意思。介于最后这一处的转换与原文信息不符，可以判断出此题答案是FALSE。
Example 3:
There were severalreasons for the research into plastics in the nineteenth century, among themthe great advances that had been made in the field of _____and the search foralternatives to natural resources like ivory.
解析：根据nineteenth century定位到文中第二段......Theimpetus behind the development of these early plastics was generated by anumber of factors- immense technological progress in the domain ofchemistry,.......其中，in the field of意思等同于inthe domain of“在....领域”，因此答案为chemistry。
In recent years, manyof them have been obliged to give up their _____ lifestyle, but they continueto depend mainly on _____ for their food and clothes.
解析：根据上下文定位到文中 Overthe past 40 years, most have abandoned their nomadic ways and settled in theterritory's 18 isolated communities, but they still rely heavily on nature toprovide food and clothing. 因为大多数同学都认识abandon, 更知道giveup是“放弃”的意思，属于单词与词组的替换，因此第一个空填nomadic,lifestyle“生活方式”与ways替换，dependmainly on与rely heavily on属于词组与词组的替换，意为“依赖......”，答案为nature。
综上所述，同义词替换在雅思阅读中的重要作用显而易见。提醒广大考生在平时一定要注意多积累，比如在背单词的时候，就不能只满足于记住单词本身，还应该多想想这个单词有什么同义、近义词，以及词组的代换，这样在雅思阅读中就能取得好的成绩。
