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Bartleby.com
Great books, free of charge, online. Don’t miss the defense of the passive voice in The American Heritage Book of English Usage.
The Pleasures and Perils of the Passive
The word passive gets a bad rap, argues Constance Hale, author of Vex, Hex, Smash, Smooch.
Style: Toward Clarity and Grace
“Choose the passive when you don’t know who did it, your readers don’t care who did it, or you don’t want them to know who did it,” writes author Joseph M. Williams. That’s one of many gems in this book.