| 序号 | 英文 | 音标 | 词性 | 中文 |
| | be of the right magnitude | | | 大小[数值]正好合适 |
| | be of the same communion | | | 是同派教友 |
| | be of the same mind | | v. | 意见相同 |
| | be of use | | | 有用 |
| | be off | | | 离开, 取消 |
| | be off at the nail | | | 神经失常 |
| | be off coupons | | | 不实行配给 |
| | be off one's beat | | v. | 做自己不熟悉的事 |
| | be off one's game | | v. | 竞技状态不佳 |
| | be off one's head | | v. | 神经错乱 |
| | be off the ground | | | 不妨碍 |
| | be off the habit | | v. | 戒去毒瘾 |
| | be off the high horse | | | 不再生气 |
| | be off the scent | | | [喻]迷失方向, 失去线索 |
| | be offended at | | | 被...触怒, 因...生气 |
| | be offended by | | | 被...触怒, 因...生气 |
| | be offended over | | | 被...触怒, 因...生气 |
| | be old enough to | | | 已经是...年龄了 |
| | be on | | | 已经开始了, 接受打赌 |
| | be on a committee | | | 任委员会委员 |
| | be on a drunk | | | 喝醉 |
| | be on a false scent | | v. | 追踪的线索不对 |
| | be on a good wicket | | v. | 处于有利地位 |
| | be on a parity with | | | 和...平等 |
| | be on a razor's edge | | v. | 在危险边缘, 在锋口上 |
| | be on a sticky wicket | | v. | 处于不利地位 |
| | be on an equality with | | v. | 与...平等 |
| | be on at | | | 不断地找岔[唠叨] |
| | be on both sides of the fence | | | [美]两面讨好 |
| | be on coupons | | | 实行配给 |
| | be on fire | | n. | 着火 |
| | be on good terms with | | | 与...有交情 |
| | be on her course | | | (船)航向不变 |
| | be on holiday | | | 正在休假[去休假] |
| | be on intimate terms with | | | 与...关系密切 |
| | be on it | | | 熟练(某事) |
| | be on its course | | | (船)航向不变 |
| | be on one's back | | v. | 仰卧, 生病卧床 |
| | be on one's ear | | v. | 在发怒 |
| | be on one's game | | v. | 竞技状态佳 |
| | be on one's good behavior | | v. | 举动规矩, 检点 |
| | be on one's high horse | | v. | 趾高气扬 |
| | be on one's honour to do sth. | | v. | 道义上有责任做 |
| | be on one's mettle | | v. | 鼓起勇气 |
| | be on one's own | | | 独处时 |
| | be on parole | | v. | 宣誓后被释放, 被假释 |
| | be on sb.'s back | | v. | 嘲笑某人, 打搅某人 |
| | be on sentry | | | 站岗, 看守 |
| | be on short commons | | v. | 吃不饱 |
| | be on space | | | [美]投稿为生 |
| | be on speaking terms | | v. | 关系好, 只是泛泛之交, 相适应 |
| | be on strike | | | 举行罢工 |
| | be on tenterhooks | | | 如坐针毡 |
| | be on the advance | | v. | (物价)在上涨中 |
| | be on the alert | | | 警戒 |
| | be on the anxious seat | | | 坐立不安, 如坐针毡 |
| | be on the band waggon | | | 参加有当选希望的一方, 为走红的人物、思想、政策等捧场 |
| | be on the band wagon | | | 参加有当选希望的一方, 为走红的人物、思想、政策等捧场 |
| | be on the bandwagon | | | 倒向胜利者一边, 趋炎附势 |
| | be on the batter | | | 醉生梦死 |
| | be on the bench | | v. | 当法官, 当主教, (运动员)作为候补选手 |
| | be on the binge | | | [俚]饮酒作乐, 闹酒 |
| | be on the boil | | | 煮着, 正在沸腾 |
| | be on the books | | | 是某商店的顾客 |
| | be on the booze | | | 痛饮 |
| | be on the bum | | | 有毛病, 损坏 |
| | be on the defensive | | | 采取守势 |
| | be on the dole | | | [口]领取失业救济金 |
| | be on the drink | | v. | 经常喝酒, 有酒瘾 |
| | be on the feed | | | (鱼)在找吃, 正吃着 |
| | be on the fence | | | 骑墙, 保持中立, 采取观望态度 |
| | be on the floor | | | (影片)正在拍摄中 |
| | be on the foundation | | | 领取基金会提供的奖学金(或薪金)的(人) |
| | be on the fuddle | | | 大醉 |
| | be on the go | | | 衰败, 濒于死亡 |
| | be on the grab | | | 伺机捞一把 |
| | be on the gridiron | | | 受迫害, 受折磨, 受遣责 |
| | be on the ground | | | 在场 |
| | be on the hedge | | v. | 骑墙, 耍两面派手法 |
| | be on the high horse | | | 盛气凌人 |
| | be on the high ropes | | | [口]兴高采烈, 得意 |
| | be on the horns of a dilemma | | | 左右为难 |
| | be on the market | | v. | 被供应出售 |
| | be on the muscle | | | 准备蛮干 |
| | be on the other side of the fence | | | 加入反对方面 |
| | be on the outlook for | | | 留心, 注意 |
| | be on the panel | | | [英]获准为参加国民健康保险者治疗的医师 |
| | be on the rack | | v. | 受酷刑, 受折磨, 极度不安 |
| | be on the rates | | v. | 领取公共救济金 |
| | be on the razzle | | v. | 狂欢 |
| | be on the receiving end | | v. | 成为攻击目标 |
| | be on the right side of the hedge | | | 主意打对[错]了 |
| | be on the rise | | | 变得更有价值 |
| | be on the roop | | v. | 用绳系在一起 |
| | be on the safe side | | | 不冒险, 为求保险 |
| | be on the same side of the fence | | | 站在同一立场上, 和某方一致 |
| | be on the sauce | | | 大量喝酒, 喝酒成瘾 |
| | be on the scene | | | 到场,在场 |
| | be on the scent | | v. | 追踪着, 探究着 |
| | be on the shelf | | | 束之高阁, 废弃的 |
| | be on the shoot | | | 备战 |