一日一词：为有源头活水来SOURCE

SOURCE

英英释义：a place, person, or thing from which something originates or can be obtained 

例句：Racial and cultural diversity has long been considered a source of strength for the US. 

2. 体会这个词 （进阶篇） 

“source”是可数名词，字面意思是“河流的源头”，可以引申为“XX 的来源”，比如“收入来源”就可以说成“a source of income”。a source of 后常接抽象名词，比如 delight、strength、happiness、progress 等，是个非常实用、地道的写法。我们来看几个例子，体会一下这个常见表达的灵活用法。 

种族和文化多样性一直被视为美国的优势，就可以说： Racial andcultural diversity has long been considered a source of strength for the US.

拳王阿里去世之后，《经济学人》给他写了一篇讣告，里面提到打拳击获得冠军并没有给他带来快乐，是这样写的： Conquering the world, as he had done time after time with pure punching skill, did not now seem the source of true happiness.

《经济学人》在一篇讨论安乐死的社论中这样写道： Liberty and autonomy are sources of human dignity.也就是说，是自由和自治赋予了人们尊严。 

奥巴马在卸任美国总统之后，接受了《经济学人》的邀请，写了一篇回顾第二任期的文章，其中有一句是这样的： America’s political system can be frustrating.Believe me, I know. But it has been the source of more than two centuries of economic and social progress.在这句话里面，奥巴马指出美国两个多世纪的经济社会进步得益于它的政治制度。 

从上面几句可以看出，要真正掌握一个单词，查英汉字典是不够的，有时候甚至查英英字典也不够。我们需要在阅读时注意常见词汇的意思和常见搭配，在语境中掌握一个词的真正用法。 

另外，我们要注意中英文表达的区别。我们平时想表达“XX的来源”时，会很容易就想到“a source of X”，不过英文的“a source of X”可以表达的意思远远多于“XX的来源”。比如例句中的“得益于” “赋予” “带来”，很多时候都可以用到“a source of X”。在学习词汇时，要多留意中英文表达习惯的不同，积累的越多，我们的口语、写作和翻译就会变得越地道。 

个人拓展：

搭配：constitute/ tap/ locate valuable/ rich/ major/ independent/ alternative sources of conflict/ illness/ worry/ problem/ pride/ happiness for 国名、人民/ to人称代词  可数名词source后可以跟好事，也可以跟坏事

没有original source的说法

Source applies more often to the point where something springs into being.

//alternative sources of energy 替代能源

//北京人Beijingers 上海人Shanghainese people

A garden was the source of inspiration for the painting.

Her son was a constant source of worry to her.

Tourism, which is a major source of income for the city, may be seriously affected. 句型

Engineers are endeavouring to locate the source of the problem.

背诵：

同义词：source, cause, origin, root, beginning

 Racial and cultural diversity has long been considered a source of strength for the US.夸国家用

 Liberty and autonomy are sources of human dignity.高级感

She has been a great source of strength to me. 她是我的力量源泉

Religion was an anchor and a source of strength and guidance. 夸导师用

The opera house is a great source of civic pride. 夸地标用