音标：[im'perәtiv]
n. 命令, 必要的事, 规则, 祈使语气
a. 命令式的, 急需的, 势在必行的, 强制的
【医】 难忍的, 强制的
在线英汉词典

imperative的短语、例句：

imperative adj 1 [usu pred通常作表语] very urgent or important; needing immediateattention 紧急; 重要; 需要立即处理
It is imperative that we make a quick decision. 我们要尽快做出决定. 2 expressing a command; authoritative 命令式的; 必须服从的; 专断的; 权威的
an imperative tone of voice that had to be obeyed 必须服从的命令腔调. 3 (grammar) of the verb form that expresses a command 祈使的
`Go!´ is in the imperative mood. `Go!´是祈使语气的句子. Cf 参看 indicative, infinitive, subjunctive. imperative, n 1 (grammar) (verb in the) mood2 that expresses a command 祈使语气（的动词）
In `Go away!´ the verb is in the imperative. 在`Go away!´中用的是祈使语气的动词.
`Go!´ is an imperative. `Go!´是祈使语气的动词. 2 thing that is essential or urgent 必要的事; 紧急的事; 必须履行的责任; 需要; 必要性
Survival is our first imperative. 我们当务之急是设法生存下来.
a moral imperative 道德上的责任.