1. C 口，嘴巴　 the opening on the face through which a person or animal can take food into the body, and speak to make sounds
2. U 空话，无聊的话；无礼的话　 meaningless; impudent talk
3. C 人，讲话的人　 person, speaker

　button up one's ～　保持沉默
　close one's ～　闭嘴
　fill one's ～ full　填满嘴，堵住嘴
　give ～ to　说出，讲出，透露
　have ten ～s to feed　要养十口人
　keep one's ～ shut　守口如瓶
　laugh on the wrong side of one's ～　失望，悲伤
　leave one's ～ open　使嘴张开
　make one's ～water　使人垂涎
　open one's ～　张嘴
　put words into sb's ～　教某人说些什么话
　screw up one's ～　撅起嘴
　shoot off one's ～　信口开河，夸夸其谈
　shut one's ～　闭嘴
　stop sb's ～　不让某人说话，用贿赂堵住某人的口
　take the bread out of one's ～　夺某人的饭碗
　wipe one's ～　擦嘴
　beautiful ～　好看的嘴
　big ～　碎嘴子，说话冒失的人
　hungry ～s　饥饿的人们
　pretty ～　好看的嘴
　small ～　小口
　sweet ～　甜蜜的嘴
　useless ～　只吃不做的人
　river ～　河口
　express by the ～　口头表达
　by way of ～　从口（入）
　by word of ～　口头的
　out of sb's ～　出自某人之口
　vessel with a small ～　口很小的容器
　with one ～　异口同声地
　from ～ to ～　一个传一个地
　pass from ～ to ～　被传播
　down in the ～　忧愁的人
　look down in the ～　显得很沮丧
　words in everybody's ～　众人的说法
　in the ～ of　据说
　with full ～　大声地
　with open ～　大声地
　～ of the river　河口
　～ with thick lips　长着两片厚嘴唇的嘴

　Don't speak with your mouth full.　嘴里塞满东西时不要讲话。
　Open your mouth wider, please.　请把嘴张大点儿。
　We speak with our mouths.　我们用口讲话。
　A fall of rock blocked the mouth of the cave.　一块石头落下来把洞口全堵住了。
　His villa is situated at the mouth of a river.　他的别墅位于河口。
　I don't want any mouth from you!　你别给我多嘴！
　Every time I open my mouth he contradicts me.　我一说话他就反对。
　We must keep down the number of useless mouths.　我们必须减少吃闲饭的人。
　The news spread rapidly from mouth to mouth.　消息很快就传开了。
　He is the mouth of the House in its relations with the crown.　他是议会对皇室的发言人。

 ♣ all mouth
　光说不干　say sth but do not have the courage to actually do
　〔说明〕 all mouth只用作表语。
　He is not all mouth, he gets results.　他并非光是空谈，他是获得成效的。
　His trouble is that he's all mouth and trousers.　他的毛病是光说不做。
 ♣ big mouth
　嘴不严，多嘴　talk too much
　I just mentioned Jim's girlfriend to his wife—me and my big mouth!　我刚才同吉姆的妻子说到吉姆的女朋友——唉，怪我多嘴！
 ♣ by word of mouth
　口头通知　inform sb by mouth
　I have informed him by word of mouth.　我已口头通知他了。
 ♣ give mouth
　说出口　start to say sth
　I have an opinion of you, sir, to which it is not easy to give mouth.　先生，我对你有意见，不过很难说出口。
 ♣ keep one's mouth shut
　保持沉默，一声不吭　reveal a secret, especially of dishonest or criminal activity
　He'd better keep his mouth shut or else.　他最好保持沉默，否则。

1. 他亲她的嘴。
　［误］ He kissed her on mouth.
　［误］ He kissed her on his mouth.
　［正］ He kissed her on the mouth.
　［析］ 作“亲嘴”解时mouth前的the不可省略，通常也不用one's.
2. 嘴里吃着食物，不要想着说话。
　［误］ Don't try to talk with a mouth of food.
　［正］ Don't try to talk with a mouthful of food.
　［析］ mouth指“口，嘴”；表示“一口，满口”，应该说mouthful.
3. 她张着嘴，凝视着他。
　［误］ She stared at him, the mouth open.
　［误］ She stared at him, her mouth open.
　［正］ She stared at him, mouth open.
　三人向前行进，他们嘴里叼着烟斗，手里提着宝剑。
　［误］ Three men came marching along, pipe in mouths and swords in hand.
　［正］ Three men came marching along, pipe in mouth and sword in hand.
　［析］ mouth用在这两种场合中，有很强的抽象的典型意义，不可数，不用于复数形式。前面不用物主代词或冠词。

1. vt. & vi.（嘴）作出说〔唱〕…的动作 （但不出声） move one's lips as if saying (words) but without making any sound
2. vt. & vi.喃喃地说，心不在焉地说，言不由衷地说　 say especially repeatedly and without understanding or sincerity

　～ silently　嘴动而不出声地说
　～ down　吃下
　～ off　大发议论，自夸地说

　The new teacher is mouthing in order to show that he is very wise and great.　这位新老师在装腔作势地讲话以表明他聪明而伟大。
　Where does this creek mouth?　这条小河流入哪里?
　The actor mouthed the words of the recorded song.　演员不出声地唱着那首已经事先录好音的歌曲。
　He was silently mouthing curses.　他不出声地咒骂。
　He was mouthing the usual platitudes about the need for more compassion.　他言不由衷地说些需要更加同情之类的老一套话。

 ♣ mouth down　(v.+adv.)
　吃下　eat down
　He mouthed down a square of cheese.　他吃了一块方干酪。
 ♣ mouth off　(v.+adv.)
　大发议论，自夸地说　speak strongly or as if one knew more than anyone else
　He was mouthing off about the high price of fish.　他就鱼价的飞涨大发议论。

　［同义词］ n. aperture, entrance, opening
　［词源］　古英语muth （口，咀嚼）