雅思定位词在文章中出现的第一种也是最常见的一种变身是“同义替换”，这包含同义词或同义词组。

　　剑6，Test4的Q9：Kim Schaefer’s marketing technique may be open to criticism onmoral grounds。题目中定位词为moral，在文章中定位，我们会在文章第三段中定位到“Selling pharmaceuticals is adaily exercise in ethical judgment”，而其中ethical即为moral的同义词。

　　剑4，Test3的Q9：Any street child can set up their own small business if givenenough support。此判断题中定位词实际上是词组“set up their own small business”，在文章中定位，我们会在文章中“Lessons learned” 的部分中定位到“Being an entrepreneur is not foreveryone, not for every street child”。此处，文章中“Being anentrepreneur”即为定位词的同义词组。

　　其他的同义词/词组变身如：

　　perceive →sense evolve →develop detect →find　　mortal →people unbiased →objective　　limb → arm or leg waste→ unwanted material　　resemble → look likedwelling → domestic building　　雅思定位词在文章中出现的第二种变身是“近义替换”，这包含近义词或近义词组。

　　剑7，Test1的Q8：However, even before this was understood, the principle hadbeen applied in the design of instruments which calculated the ____ of theseabed。 此题为在原文中选词填空的摘要题，定位词为“calculate”和“seabed”， 在文章中我们会定位到“Before this wasdiscovered, engineers had already built instruments to exploit the principle,for example to measure the depth of the sea under aship”。此处“measure”即为“calculate”的近义词，而“sea”即为“seabed”的上义词。