writer
单词辨析：
普通用词，含义较广，多指以写作为职业的作家，一般限于传统文学体裁（如小说、戏剧、诗歌、散文等）之范畴；也可指普通报刊文章、报道、论文、甚至广告文字的撰写者或写家。有时可用于含褒、贬之意的非正式说法。
a ghost/hack/prolific writer
一个捉刀人/雇佣文人/多产作家
Defoe was a famous English writer.
笛福是英国的著名作家。
She was the writer of the letter.
她就是写这封信的人。
This example shows that good writers always try to avoid ambiguity.
这个例子说明，会写文章的人总是尽量避免歧义。
较正式用词，常特指某一文章、著作等的作者；指作家时，其与writer 的显著区别就是并不强调是否以写作为职业，而只强调写作出版的事实。
He became an author quite late in life.
他晚年才成为作家。
If you know the author only, just look it up in the author catalogue.
如果你只知道著作人，那就查作者目录。
In his preface, the author set forth his reasons for writing the book.
作者在前言中阐明了他写该书的原因。
相关例句：
The writer constructed the story from memories of her childhood.
作者根据她自己童年的回忆构思了这个故事。
She is now a writer and fashion stylist.
她现在是作家兼时尚造型师。
The writer has sold out his artistic standards and now just writes for a living.
这个作家已背弃了他原来的艺术标准，现在只是卖文为生。
He's embarking on a new career as a writer
他即将开始新的职业生涯——当一名作家。
Kingdon's broad experience, as writer and scholar, suffuses this important book.
金登身为作家和学者的丰富阅历在这部重要的著作中体现得淋漓尽致。
I can't agree with the letter writer who claims bringing back the death penalty would be an abuse of human rights.
我不能赞同写信人所称恢复死刑就是侵犯人权的说法。