| 序号 | 英文 | 音标 | 词性 | 中文 |
| | be on the shoot | | | 备战 |
| | be on the spree | | v. | 在狂欢中 |
| | be on the staff | | | 在职, 在编人员 |
| | be on the stage | | | 当演员 |
| | be on the stick | | v. | 警觉 |
| | be on the straight | | v. | 品行端正 |
| | be on the strength | | v. | 编在士兵册上 |
| | be on the team | | | 当队员 |
| | be on the tiles | | v. | 寻欢作乐 |
| | be on the tiptoe of expectation | | v. | 翘首以待, 殷切期望 |
| | be on the track of sb. | | v. | 追踪着某人, 掌握着某人的线索 |
| | be on the wing | | | 飞翔 |
| | be on the wrong side of the hedge | | | 主意打对[错]了 |
| | be on thebench | | | 开庭审问案件 |
| | be on thorns | | v. | 如坐针毡, 焦虑不安 |
| | be on tiptoe of excitement | | | 非常兴奋 |
| | be on tiptoe with curiosity | | | 充满好奇心, 好奇得心里发痒 |
| | be on to | | v. | 与...联系[商谈] |
| | be on wires | | v. | 紧张, 极度兴奋 |
| | be one step ahead of the sheriff | | | 陷入财政困难 |
| | be one too many | | | 多余的 |
| | be one's baby | | n. | 职责 |
| | be one's bag | | n. | 喜欢做的事 |
| | be one's own man | | v. | 不受他人控制 |
| | be one's own master | | v. | 自立 |
| | be oneself | | | [苏]独自一人 |
| | be oneself again | | | (身体或精神)恢复正常 |
| | be only skin and bone | | v. | 极瘦, 瘦得皮包骨 |
| | be open to | | v. | 开放 |
| | be open to an offer | | | 愿意考虑买主的出价 |
| | be open to conviction | | | 服理， 能接受意见 |
| | be open to criticism | | | 有待批评 |
| | be open to objection | | | 有可议之处, 有不合理之处 |
| | be opposite from | | | 不相容 |
| | be opposite to | | | 与...相反 |
| | be out | | | 不在, 公开 |
| | be out and about | | | (病后)能起床走动 |
| | be out at feed | | | (牛等)在牧场上吃着草 |
| | be out for | | v. | 努力想 |
| | be out for a duck | | | 退场 |
| | be out for the count | | | 打输, 被打败 |
| | be out for the dust | | | [美口]一心想赚钱 |
| | be out in left field | | | 不可能的 |
| | be out of | | | 没有, 脱离危险 |
| | be out of all relation to | | v. | 与...极不相称 |
| | be out of bloom | | | 花已落 |
| | be out of cash | | | 没有现款, 无钱 |
| | be out of collar | | | 有［无］工作， 担任［失去］职务 |
| | be out of condition | | | 身体很好［不适］ |
| | be out of contact with | | | 和...接触， 有联系［脱离接触， 失去联系］ |
| | be out of countenance | | | 失色， 惊惶失措， 局促不安 |
| | be out of court | | | 被驳回， 不值得注意， 没有理由［根据］ |
| | be out of earshot | | | 在听力所及的距离之外 |
| | be out of employment | | | 解雇, 失业 |
| | be out of form | | | 处于良好的 [不良的] 竞技状态 |
| | be out of harmony with | | | 与...不协调一致 |
| | be out of mourning | | | 服满, 出服 |
| | be out of office | | | 下台 |
| | be out of one's mind | | v. | 精神不正常 |
| | be out of patience with | | | 对...忍无可忍 |
| | be out of pocket | | v. | 赔钱 |
| | be out of puff | | v. | 上气不接下气 |
| | be out of the fashion | | v. | 不合时尚 |
| | be out of the question | | | 不可能 |
| | be out of the swim | | | 不明内情, 脱离当前形势, 不合潮流 |
| | be out of town | | v. | 不在城里 |
| | be out of use | | | 没有人用,不时行 |
| | be out of vogue | | | 已不流行 |
| | be out on bail | | v. | 在保释中 |
| | be outside the law | | v. | 不合法 |
| | be outside the ropes | | | 是门外汉 |
| | be over | | | 结束 |
| | be over age | | | 超过[未达]适龄 |
| | be overcome by fear | | | 感到十分害怕 |
| | be overcome with fear | | v. | 感到十分害怕 |
| | be overwhelmed by | | | 受不起, 不敢当 |
| | be p and q | | | 上等 |
| | be packed as close as herrings | | v. | 极拥挤 |
| | be packed to capacity | | | 挤得满满的 |
| | be partial to | | | 对...特别喜欢 |
| | be particular about | | | 对于...很认真, 一点也不马虎 |
| | be particular over | | | 讲究 |
| | be past it | | | [口](技巧, 精力, 性欲等)不如当年 |
| | be past praying for | | v. | 不可救药 |
| | be past the spoon | | | 已经不是孩子(是大人了) |
| | be patient of | | v. | 能忍受...的, 容忍...的, 有...可能的 |
| | be patient with | | v. | 对...有耐心 |
| | be paved with | | | (路面等)以...铺成 |
| | be pax with | | | 与...交朋友 |
| | be peculiar to | | | 为...所独有的 |
| | be pervious to | | v. | 能被接受 |
| | be pinched for money | | | 手头拮据 |
| | be piqued at | | | 为...生气 |
| | be pissd off | | | 发怒, 极厌恶 |
| | be pissed off | | v. | 发怒 |
| | be pivoted at | | | 支点位于 |
| | be pivoted between | | | 把枢轴放在...上 |
| | be pivoted in | | | 把枢轴放在...上 |
| | be placed | | | [体]名列前三名 |
| | be placed on the reserve | | | 被编入后备舰队 |
| | be placed under arrest | | | 被捕, 在拘留中 |