It was imperative that he act as naturally as possible.最重要的是他要做到尽可能自然。He always speaks in an imperative tone of voice.他老是用命令的口吻讲话.The imperative mood is a kind of grammatical phenomenon.祈使语气是一种语法现象....
The most important political imperative is to limit the number of US casualties.现在的头等政治大事就是要控制美国人的伤亡人数。Job creation has become an imperative for the government.创造就业机会是政府必须做的事。It was imperative that he act as naturally as...