| be liable to | 该受(罚), 应遵守..., 有...的倾向, 易于... |
| be liberal of | 乐于... |
| be light in the head | 头晕, 头脑简单 |
| be limited to | 被限制在...上 |
| be lined with | 与...相并列, 与...相排列, 内膜上衬有/布满... |
| be linked to | 与...连接 |
| be lit up | 喝醉着, 被毒品麻醉着 |
| be little accounted of | 被轻视 |
| be little accounted of... | 被...轻视 |
| be loath to do sth for sb | 不愿为某人干某事 |
| be located in | 坐落于..., 位于... |
| be locked in a fight | 打得难分难解 |
| be locked in contemplation | 陷入沉思 |
| be Lombard Street to a China orange | 悬殊极大, 有天壤之别, 几乎确切无疑 |
| be looked on as | 被看作为..., 被认为是... |
| be looking for trouble | 自找麻烦 |
| be lost in a fog | 困惑不解 |
| be lost in reflection | 陷入沉思中 |
| be lost in slumber | 酣睡 |
| be lost in thought | 想得出神 |
| be lost on | 对...不起作用 |
| be lost to all sense of shame | 全不知耻 |
| be lost to history | 无历史记载可查 |
| be lost to shame | 恬不知耻, 厚颜无耻 |
| be loud in one's praises | 竭力称赞 |
| be loyal to | 忠于... |
| be lucked out | 倒霉, 被杀 |
| be maddened by joy | 欣喜欲狂 |
| be made of | 由...所组成 |
| be made of money | 钱多得用不完 |
| be made up of | 由...所组成 |
| be mailed on request | 承索即寄 |
| be married at a registry | 登记结婚 |
| be master in one's own house | 不受干涉地处理自己的事 |
| be master of | 控制, 掌握 【法】 掌握, 控制 |
| be meat and drink to sb | 对某人来说是无上乐趣 |
| be meat and drink to sb. | 对某人是最好的享受 |
| be meat for sb's master | 对某人说来未免太好 |
| be more than a match for sb | 比某人强, 胜过某人 |
| be moved to tears | 感动得流出眼泪 |
| be much accounted of | 被重视 |
| be much accounted of... | 被...重视 |
| be much obliged to sb for sth | 因为(某事)非常感激(某人) |
| be much to seek | 缺乏, 还没找到 |
| be named after | 以...名字命名 |
| be nasty to sb | 跟某人闹别扭 |
| be negligent of | 疏忽... |
| be negligent of one's duties | 玩忽职守 |
| be nervous of | 害怕 |
| be nescient of sth | 对某事一无所知 |
| be nettled by sth | 因某事着恼 |
| be nice to sb | 对某人友好 |
| be no end fine | 好极了 |
| be no judge of | 【法】 不能判定 |
| be no respecter of persons | 对任何人一视同仁 |
| be no skin off sb's back | 与某人丝毫不相干 |
| be no skin off sb.'s back | 与某人丝毫不相关 |
| be none so fond of sth | 并不那么喜欢某物 |
| be none the wiser for | 并不因...而有所开窍 |
| be nonplussed for a moment | 一时不知所措 |
| be nonplussed over sth | 对某事一筹莫展 |
| be not a little bewildered | 大惑不解 |
| be not a patch on | 比不上 |
| be not fit to hold a candle to | 与...不能相比 |
| be not made of salt | 不怕雨淋 |
| be not quite the ticket | 不太合适 |
| be not up to much | 不是怎样了不起, 蹩脚 |
| be not worth a damn | 毫无价值 |
| be not worth a rap | 毫无价值 |
| be not worth refuting | 不值一驳 |
| be not worth the candle | 得不偿失 |
| be noted for | 以...而闻名 |
| be nothing to | 对...无足轻重, 不能与...相比 |
| be nowhere | 一无所得, 一事无成, 失败, 远远地落在后面, 未得名次 |
| be null and void | 无效 |
| be nuts about | 狂热于 |
| be obedient to | 对...服从 |
| be oblivious to all the risk | 不顾一切危险 |
| be obsequious to | 奉承 |
| be occupied in | 使忙碌于, 使从事于 |
| be of a calm temper | 性情平和 |
| be of a hot temper | 脾气急躁 |
| be of a quick temper | 脾气急躁 |
| be of age | 成年 |
| be of an even temper | 性情平和 |
| be of assistance to sb | 有利于某人 |
| be of effect | 有效 |
| be of frequent occurrence | 经常发生 |
| be of good cheer | 高兴, 勇敢 |
| be of great moment | 很重要 |
| be of help to | 对...有帮助 |
| be of ill repute | 臭名昭著 |
| be of little amount | 不重要, 无价值 |
| be of little moment | 不很重要 |
| be of much help to sb | 对某人很有帮助 |
| be of no effect | 无效 |
| be of no help to sb | 对某人没有帮助 |
| be of no moment | 不重要 |
| be of no significance | 无关紧要 |
| be of one mind | 同心协力 |