简单释义：

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n. 构词要素；用构词要素构成的词

adj. （对某事物或性格的发展）有持续重大影响的

网络 形成性；形成的；形成中的

变形：

复数：formatives  

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完整释义：

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adj.

1.形成的,构成的
2.〔语〕构形的,构词的;〔生〕形成的
3.对形成有影响的
4.形成,草创
5.造型的
6.生殖
7.【语法】构词(用)的

n.

1.构词要素; 用构词要素构成的词

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例句：

1. His formative years were the long bleak decades of Poland's communist era, first in Warsaw and then in provincial Gdansk.
   这种性格成型的日子，要追溯到波兰萧瑟黯淡、长达数十年的共产主义时代，先是在华沙，继而在格但斯克省。

2. In Earth's formative years, it was hit by thousands of comets like this.
   在地球的最初岁月中，它曾被成千上万个这样的彗星撞击。

3. Global ambition has been a formative part of the western world-view for over 2, 000 years, framing the fates of nations and governments.
   全球化野心作为西方世界观的一部分，形成历史已有两千多年，它对国家和政府的前途命运影响深远。

4. It proves that the result of summative assessment will be better, if enough attention has been paid to formative assessment.
   实践证明，如果重视了过程性评价就会发现终结性评价成绩会更好。

5. Maybe I was as nerdy and dorky as my older sister says, because sex was the furthest thing from my mind during those formative years.
   也许我正如我的大姐所说的那样是个书呆子，因为在我的整个青葱岁月中我几乎没想过做爱做的事。

6. Design choices can be tested on a persona in the same way that they can be shown to a real user during the formative process.
   我们可以在人物角色上对设计方案进行测试，就像在正式过程中针对真实用户一样。

7. One day we sat and talked about his childhood, and he told me of a formative experience.
   有一天我们曾坐在一起谈论他的童年，他告诉我他的一个很有意思的经历。

8. Since the concept of "formative evaluation" was brought up, its meaning has been changing, and the term used shifted as well.
   自“形成性评价”的概念提出后，其内涵不断发展，使用的术语也有所变化。