adj. 维持生命所必需的,至关重要的,生死攸关的,生机勃勃的
变形：比较级：more vital； 最高级：most vital；
vital可以用作形容词
vital侧重事物的关系,多含有中性或积极的意味。
vital后接的that从句通常用虚拟语气。
vital已含有most important的意思,故不再用于比较级和最高级。
vital用作形容词的用法例句
The government saw the introduction of new technology as vital.政府认为引进新技术至关重要。
She's a very vital sort of person.她是个精力旺盛的人。
Confronted with such a vital problem of life and death, he looked as cool as a cucumber.面对着这样重大的生死问题,他的神态却异常冷静。
1、The vital clue to the killer's identity was his nickname, Peanuts.
查明杀手身份的重要线索是他的外号叫“花生”.
2、Officials failed to pass vital information to their superiors.
官员们没有将重要信息汇报给他们的上司。
3、Support from those closest to you is vital in these trying times.
在这些困难的时刻，最亲近的人给予你的支持至关重要。