1
go on the offensive
go on the offensive 是固定搭配，表示从防守转为主动攻击。
Facing heavy criticism, the mayor went on the offensive in the press conference.
面对强烈批评，市长在新闻发布会上采取了攻势。
进攻；攻击；攻势
先理解核心含义，再看它在真实句子里的用法。
进攻；攻击；攻势
An attack, especially a military one; the act or posture of attacking.
Facing heavy criticism, the mayor went on the offensive in the press conference.
面对强烈批评，市长在新闻发布会上采取了攻势。
攻击
An attack.
进攻敌人的行动
the action of attacking an enemy
进攻或能够进攻的姿态
The posture of attacking or being able to attack.
The general launched a massive offensive at dawn.
将军在黎明时分发动了一次大规模进攻。
The army's offensive lasted for three weeks before they achieved victory.
军队的攻势持续了三周才取得胜利。
They prepared a new offensive to retake the lost territory.
他们准备了一场新的进攻来夺回失地。
go on the offensive 是固定搭配，表示从防守转为主动攻击。
Facing heavy criticism, the mayor went on the offensive in the press conference.
面对强烈批评，市长在新闻发布会上采取了攻势。
launch an offensive 意为“发起进攻/攻势”，后面常接 against 引出进攻对象。
The army launched a major offensive against the rebel forces.
军队对叛军发动了大规模攻势。
be on the offensive 描述一种主动进攻的状态，而 go on the offensive 强调开始进攻的动作。
The home team was on the offensive for most of the match.
主队在比赛的大部分时间里都处于攻势。
Not this
The army launched offensive against the city at dawn.
Use this
The army launched an offensive against the city at dawn.
名词 offensive 表示‘进攻、攻势’时可数，单数形式前需要冠词；汉语‘发动攻势’没有冠词，所以容易漏掉 an。
Not this
They started an offensive to the enemy positions.
Use this
They started an offensive against the enemy positions.
表示‘针对…的攻势/进攻’时，offensive 后接介词 against，而不是 to；‘向敌人阵地发起攻势’要说 an offensive against the enemy positions。
Not this
The general ordered several offensive on the northern front.
Use this
The general ordered several offensives on the northern front.
offensive 是可数名词，复数形式为 offensives；several 修饰可数名词时要用复数，不能把单数形式 offensive 当作复数。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
军事攻势
The army launched a major military offensive at dawn.
军队在黎明时发动了大规模军事攻势。
发动攻势
The rebels launched an offensive against the capital.
叛军对首都发动了攻势。
采取攻势
The team went on the offensive in the second half.
球队在下半场转为攻势。
转为攻势
The candidate took the offensive in the debate.
候选人在辩论中转为攻势。
采取攻势；主动进攻
After months of defense, the company decided to take the offensive in the market.
在防守数月之后，公司决定在市场上采取攻势。
发起进攻；转守为攻
The politician went on the offensive against her opponent's policies.
那位政治家对对手的政策发起进攻。
处于攻势；主动出击
The team was on the offensive for most of the second half.
球队在下半场大部分时间里都处于攻势。
Use offensive naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
名词 offensive 是“进攻”：想象开头的 off 是“把敌人打掉”，随即冲出即攻势；与形容词“冒犯的”区分，名词多用于 go on the offensive（发动攻势）。
语域：neutral 常见场景：军事报道、新闻标题、战略讨论 作名词时通常用于军事或战略语境，指进攻行动或攻势；多出现在新闻报道或正式表述中，日常口语较少使用。
该词常用于军事语境，指进攻行动。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.