1.moon的意思是指围绕地球旋转的“月亮”“月球”。因为moon是地球唯一已知的天然卫星,它常与定冠词the连用,首字母小写。在科技文章中,为了醒目,常把moon的第一个字母大写。moon有时可用于比喻,表示“月状物”。
2.moon在表示月亮某时间出现等某种状态时,可与不定冠词连用,此时其前常有形容词修饰,作此解时常用单数。
3.在文学语言中, moon也可用作复数,强调月亮不断地重复出现,衬托出人物内心情绪和思想状况。在诗歌中, moon可作“月”解。
4.moon引申作“月光”解时,要与定冠词the或little等词连用。
5.moon作“卫星”解时是可数名词。当指地球以外的其他行星的卫星时,可有复数形式。
6.在有些成语中, moon常比喻为“可望而不可得的东西”。

admire the moon
赏月 enjoy a beautiful full moon
We like to admire the moon.我们喜欢赏月。

cry for the moon
想入非非 desire strongly sth that cannot be gained
We need not hope for lower taxes in the future that would be crying for the moon.我们不希望将来会减税,那是异想天开。

over the moon
非常快乐,狂喜 absolutely delighted
The whole team were over the moon at winning the competition.全队都为赢得这场比赛而欣喜若狂。
She's over the moon about her new baby.她生了一个小宝宝,乐极了。

promise the moon
空口许诺 promise to give sb/sth that is beyond one's means or power to give
▲promise sb the moon
I can't promise you the moon, but I'll do my best.我不能对你胡乱许愿,不过我一定尽力而为。

Some as tronauts have landed on the moon.有几个宇宙飞行员登上了月球。
It is not possible for us to admit there is life of any sort on the Moon.我们不可能承认月球上有任何生命。
The far side of the moon is difficult for us to observe.我们难以观察到月亮的另一面。
The moon is distant from the earth.月球离地球甚远。
Soon it will be commonplace for men to travel to the moon.人们去月球旅行很快就会成为常事。
The moon is closer to the earth than any other body in the sky.月亮比天上其他天体离地球近。
The moon revolves around the earth.月球绕地球运动。
We have landed men on the moon.我们已把人送上月球。
The moon yields less light than the sun.月亮的光线比太阳弱。
The moon is down.月已西沉。
The full moon is circular.满月呈圆形。
Above me was a cloud less sky ill uminated by a glorious moon.我头上是一片无云的天空,一轮明月照耀着。
A full and bright moon hangs over the garden.一轮明月高悬在花园的上空。
It was a cold winter night.A pale moon hung low in the sky.这是寒冷的冬夜,苍白的月亮挂在天边。
Here, under her few square yards of thatch, she watched winds, snows, rains, gorgeous sunsets and successive moons at their full.在这里,她整天呆在这几平方米大的茅草棚中,守着风风雨雨,望着雪花飘飘,目送灿烂的晚霞,数着一次又一次月圆。
Summer is but three moons long.夏季只有三个月。
He took a walk with her under the moon.他和她在月光下散步。
The planet Jupiter has nine moons.木星有九颗卫星。
Mars has two small moons.火星有两个小卫星。
John asked his mother for a hundred dollars today.He was always asking for the moon.约翰今天向他母亲要100元,他总是异想天开。

一轮明月从山后冉冉升起。
［误］  The bright moon was coming up over the hill.
［正］  A bright moon was coming up over the hill.
［析］  moon前有形容词修饰,表示某种状态下的月亮时,通常用不定冠词。

moon前可加the,也可加a,在大部分场合冠词用the,含有“我们总是怀着亲密感情眺望的那月亮”的情感; a moon只是客观地看月亮,表达“所谓月亮”的意义,加上形容词,指某种月亮,也加a。例如:
An enormous moon hangs over the garden.一轮明月挂在花园的上空。
The moon is setting.月亮正在下落。

［同义词］   crescent, demilune, lune
［词源］  ＜古英语mona＜高地德语mano (月亮) ＜拉丁语mensis (月) ＜希腊语men, meme (月球)