1 involved in activity; lively 积极的；活跃的: My grandfather is very active for his age. 就我祖父的年纪来说，他已算是很活跃。I have a very active social life. 我积极参与社交活动。I was at the meeting but I didn't take an active part in the discussion. 我出席了会议，但没有积极参加讨论。 [OPP] inactive 反义词为 inactive

2 that produces an effect; that is in operation 有效的；运作中的: an active volcano(= one that can still erupt) 活火山

3 used about the form of a verb or a sentence when the subject of the sentence performs the action of the verb （指动词或句子形式）主动的: In the sentence ‘The dog bit him’, the verb is active. 在 The dog bit him 这一句子中，动词用的是主动语态。 You can also say: ‘The verb is in the active’. Look at passive. 表示动词是主动式，可说 The verb is in the active。参看 passive。 ➔actively adv She was actively looking for a job. 她在积极找工作。