approximative + noun
作定语时直接放在名词前，说明该事物是估计或近似的结果。
She gave an approximative answer instead of an exact figure.
她给出了一个近似的答案，而不是确切的数字。
与估计或近似有关的。
relating to, based on, or being an estimate or approximation; approximate
与估计或近似有关的。
Of, relating to, or being an estimate or approximation.
The approximative cost of the project is around $5,000.
该项目的近似成本大约为5000美元。
用法提示：形容词approximative修饰cost，表示不是精确的数值。
We only need an approximative estimate for the time being.
我们暂时只需要一个近似估算。
用法提示：形容词approximative修饰estimate，强调粗略、不精确。
His approximative translation missed several nuances of the original text.
他那近似的翻译遗漏了原文的几处细微差别。
用法提示：形容词approximative修饰translation，说明翻译不够精确。
作定语时直接放在名词前，说明该事物是估计或近似的结果。
She gave an approximative answer instead of an exact figure.
她给出了一个近似的答案，而不是确切的数字。
作表语时用来说明主语本身只是近似值，常带“不够精确”的意味。
These figures are approximative, so don't rely on them.
这些数字只是近似的，所以别依赖它们。
可用 highly、merely、somewhat 等程度副词修饰，说明近似的程度。
The method is highly approximative and can easily mislead readers.
这种方法极为近似，很容易误导读者。
grammar · medium
易错句子The approximative cost of the repair is about 200 yuan.
正确表达The approximate cost of the repair is about 200 yuan.
表示“大概的、近似的”数值时，英语习惯用 approximate 作定语，如 approximate cost、approximate value。approximative 指“与估计或近似法有关的”，多用于学术、技术语境（如 an approximative method），用它修饰 cost 不自然。汉语“近似的”同时对应 approximate 和 approximative 两个词，学习者容易选错。
grammar · medium
易错句子The two designs look approximative identical.
正确表达The two designs look approximately identical.
修饰形容词 identical 需要副词 approximately。approximative 是形容词，不能作状语去修饰另一个形容词；汉语没有 -ive 与 -ly 的词形分工，学习者常漏掉 -ly。
grammar · medium
易错句子This is only an approximative of the truth.
正确表达This is only an approximation of the truth.
冠词 an 后面需要名词，approximative 是形容词，不能直接当名词用。表示“近似（的结果）”要用名词 approximation，如 an approximation of the truth。汉语“近似”既能作形容词又能作名词，因此容易出现词性混淆。
approximate 直接说明事物本身接近某个数值，可作定语或表语，还能作动词表示“接近”；approximative 只作形容词，表示“与估算或近似值有关的”，是学术用语，不直接修饰具体数字。
estimated 强调由人估算得出的具体结果，常修饰数值、数据；approximative 强调“与近似、估算这一性质相关”，本身不给出任何估算结果。
rough 是日常口语词，指不精细、不精确，可修饰计算、计划、草图等；approximative 属正式学术用词，只表示“与近似值有关的”，语域明显更窄。
approxim + -ate
approximat(e) + -ly
approximat(e) + -ion
approxim + -ant
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