late 15c., from Middle French formatif, from Latin format-, past participle stem of formare "to form," from forma (see form (n.)). As a noun, in grammar, from 1816.
权威例句
1. In the formative years their alliance carried all before it.
在草创阶段,他们的联盟所向披靡。
2. the formative years of childhood
童年性格形成的时期
3. Parents have the greatest formative effect on their children's behaviour.
父母对孩子的行为有最深远的影响.
4. She spent her formative years in east London.
她在伦敦东区度过其性格形成关键期。
5. She was born in Barbados but spent her formative years in east London.