1. U 金，黄金　 precious yellow metal used for making coins, ornaments, jewellery, etc.
2. U 金币或金制品　 coins or objects made of this metal generally
3. U C 金色　 colour of this metal
4. U C 金牌　 gold metal

　gold　是不可数名词，意为“金子，黄金”，也常作为金币与金器的总称，引申为“财富”，还可表示“金质奖章”“金色”。

　bear ～　含金
　carry ～　含金
　dig for ～　挖金
　go off ～　（货币）放弃金本位
　mine for ～　开采黄金
　pan for ～　淘金
　search for ～　探金矿，寻找金子
　set sth in ～　把某物嵌上金子
　treasure ～　珍视黄金，珍爱金子
　strike ～　发现黄金，发现贵重之物
　win a ～　获得金牌
　black ～　黑金，石油
　bright ～　闪闪发光的金子
　dead ～　无光泽的金子
　fine ～　纯金
　gleaming ～　闪闪发光的金子
　impure ～　不纯的〔掺假的〕黄金
　old ～　古金色
　precious ～　宝贵的黄金
　pure ～　纯金
　shining ～　闪光的金子
　solid ～　纯金，赤金
　true ～　真金
　～ field　采金地
　～ rush　淘金热
　～ standard　金本位（制）
　age of ～　黄金时代
　cloth of ～　金线织物
　heart of ～　高贵纯洁的心
　voice of ～　优美的声音，金嗓子

　Gold is found in rock and streams.　黄金蕴藏在岩石与溪流中。
　I question about this being gold.　我怀疑这是金子。
　All is not gold that glitters.　闪光的东西不一定都是金子。
　For over 100 years, men have sought for gold in the hills.　一百多年以来人们一直在山中寻找黄金。
　They gaped at me when I told them about the gold I had found.　我告诉他们我找到黄金的情况时，他们惊讶得张着大嘴看着我。
　My necklace is made of pure gold.　我的项链是纯金的。
　Is your ring real gold?　你的戒指是真金的吗?
　His precious gold is all that matters to him.　他那珍贵的黄金对他来说就是一切。
　The plate is overlaid with glittering gold.　那个盘子镀有闪闪发光的金子。
　She has a heart of gold.　她有一颗金子般的心。
　People used to pay in gold.　以前人们常用金币交易。
　She wore so many ornaments that she seemed to be covered in gold.　她身上穿戴着许多装饰品，使她全身像被黄金包裹起来似的。
　The monetary system of some countries used to be based on gold.　过去有些国家的货币制度是金本位制的。
　I love the brown and gold of autumn leaves.　我喜欢秋叶的金褐色。
　The chinese team won a gold and two silver at the races today.　今天的赛事中中国队获得了一块金牌两块银牌。

 ♣ as good as gold
　表现很好的　very well-behaved
　The children caused no trouble all day; they were as good as gold.　一整天孩子没惹过一点麻烦，他们乖极了。
　We took the children to a restaurant for a meal and they were as good as gold.　我们带着孩子到餐馆去吃饭，他们都很乖。
 ♣ strike gold
　找到丰富的消息、财源、幸福源泉等　discover a rich source of information, wealth, happiness, etc.
　What's the matter with you?You're acting like you struck gold.　你怎么啦?你的表现好像发了财。
　She hasn't always been lucky with her boy-friends but she seems to have struck gold this time.　她结交男朋友一直运气不佳，而这一次似乎称心如意了。
　I worked at the problem eight days before I struck gold.　在取得突破以前我对这个问题钻研了八天。
 ♣ worth one's〔its〕 weight in gold
　（雇员或队员）非常有价值的 highly valued as an employee〔member〕　of a team, etc.
　I'm glad we took on that new girl to help in the shop, she's very willing and worth her weight in gold.　我很高兴，我们雇来在店里帮忙的那个新姑娘很勤快，而且非常有价值。

1. 金制的　 made of gold
2. 金色的　 of the colour of gold

　～ bar　金条
　～ car　金黄色的车
　～ bracelet　金手镯
　～ bullion　金块
　～ fish　金鱼
　～ medal　金牌
　～ paint　金黄色的油漆
　～ ring　金戒指
　～ tooth　金牙

　The price of gold coins fluctuates in tune with commodities.　金币价格随商品涨落。
　The gold ring should be given back to the owner.　这枚金戒指应该还给失主。
　The pendant was hanging by a thin gold chain.　那耳环是由一根细金链子吊着的。
　They needed three gold leaves.　他们需要三张金箔。
　Sixteen gold medals were captured by the Chinese at the 1992 Olympic Games.　中国人在1992年奥运会上夺得16块金牌。
　Johnson got the gold medal in the 100 metres.　约翰逊在百米赛跑中获得金牌。
　Winning an Olympic gold medal was, I suppose, the supreme moment of my life.　我认为荣获奥运会金牌是我一生中最重要的时刻。
　Join the blue wool onto the end of the gold pattern and work the same stitches into the back.　在这金色图案边缘织上蓝毛线，在背面也用同样的方法来织。
　This watch is gold.　这块表是金的。

 ♣ gold, golden
　这两个形容词都可译为“金的”。其区别是：
1. gold表示“金的”“金色的”，指真金，而golden表示“似金的”“金黄色的”，并非真金。例如：
　Mrs. Smith bought a gold watch.　史密斯夫人买了一块金表。
　She had golden hair and blue eyes.　她金发碧眼。
2. 作“金制的”解时，古英语中也可用golden，如golden ring; gold ring侧重“质地”，意思是“这是戒指形的金子”；而golden强调“原料”，意思是“这戒指是用金子加工的”。
3. gold较少用于比喻，而golden常用于比喻，表示“珍贵的”“幸运的”“非常有利的”。
4. “金鱼”应说gold fish.

　［词源］　古英语gold（金）