1
be offside
offside 作形容词，常作表语，表示处于越位位置。
The striker was offside when he received the pass.
这名前锋接球时越位了。
越位
先理解核心含义，再看它在真实句子里的用法。
越位
In sports, the mistake of being in an illegal position on the playing field, such as being ahead of the ball or puck when the rules do not allow it.
The striker was offside when he received the pass.
这名前锋接球时越位了。
越位打法。
An offside play.
役畜(如马或牛)的右侧,尤指套着挽具时。
The right-hand side of a working animal such as a horse or bullock, especially when in harness.
The goal was disallowed because the forward was offside when the pass was made.
这个进球被判无效，因为传球时前锋越位了。
The striker strayed offside just before the ball was played, so the referee blew the whistle.
前锋在球传出之前跑到了越位位置，所以裁判吹了哨。
Their defender moved up quickly and caught our winger offside in the second half.
他们的后卫快速上抢，在下半场让我们的边锋越位了。
offside 作形容词，常作表语，表示处于越位位置。
The striker was offside when he received the pass.
这名前锋接球时越位了。
offside 作形容词补语，用在 rule + 宾语后，表示“判定某人越位”。
The referee ruled the forward offside.
裁判判这名前锋越位。
offside 作副词，与 step 等动作动词连用，表示“移动到越位位置”。
The defender stepped offside before the puck crossed the blue line.
那名防守队员在球越过蓝线前进入了越位位置。
offside 作名词，指越位犯规；disallow sth for offside 表示“因越位而判……无效”。
The referee disallowed the goal for offside.
裁判因越位判定这个进球无效。
Not this
He offsided.
Use this
He was offside.
offside 是形容词/副词，不是动词；表示“越位”这一状态应使用系动词 be + offside，而不能把它当动词加 -ed。
Not this
The striker was in offside.
Use this
The striker was offside.
offside 作表语形容词时前面不加介词 in；“越位”是状态而非地点，直接用 be offside 即可。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
越位规则
He doesn't really understand the offside rule in football.
他其实不太懂足球中的越位规则。
越位位置
The striker was clearly in an offside position before the cross.
传中前，这名前锋明显处于越位位置。
越位陷阱
The two defenders stepped up to set an offside trap and made the forward offside.
两名后卫上前设下越位陷阱，使对方前锋越位。
越位进球
The referee disallowed the offside goal after watching the replay.
裁判看完回放后判定这粒越位进球无效。
造越位；使某人越位
The defender played the striker offside just before the pass.
就在传球前，后卫让前锋越位了。
被判越位
The goal was ruled offside by the assistant referee.
这个进球被助理裁判判为越位。
越位
The Iranian film Offside (2006) shows a group of young women who disguise themselves as boys to watch a football match in Tehran, and its title captures the idea of breaking social rules as well as the offside rule in football.
伊朗电影《越位》（2006年）讲述了一群年轻女性乔装成男孩，到德黑兰观看足球比赛的故事。片名既指足球中的越位规则，也隐喻对社会规则的打破。
Use offside naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
off（离开）+ side（边）→ 球场上跑到了不该在的边，越位犯规。
语域：neutral 常见场景：sports commentary、sports rulebook、post-match discussion 该词通常用于体育语境，尤其在足球、冰球等比赛中的越位判罚；在解说、规则说明和赛后讨论里都比较自然，属于中性表达。
offside 以重读的 /saɪd/ 结尾，因此 inside、outside、beside、alongside 与它押韵（都以重读的 /saɪd/ 结尾）。seaside 和 hillside 拼写上也以 -side 结尾，但重音在第一个音节，/saɪd/ 不重读，所以并不押韵；不要仅凭拼写判断发音。
Dictionary facts from ECDICT, WIKTIONARY.