Where possible, reduce the use of which, who that whom whether... or not etc. 少用关系代词 学会运用关系代词是你学习英文过程中的一个重要的阶段。学会少用它们则表明你取得了更大的进步。在校对你的作品时，仔细检查一下所有的whichs, whos thats和whoms是否必要。删除不必要的关系代词会使你的文章更精彩。 Example: Unnecessary: It is a truth that is universally acknowledged that a single man in possession of a good fortune must be in want of a wife. Better: It is a truth universally acknowledged that a single man in possession of a good fortune must be in want of a wife. -- Jane Austin 注：被动语态修饰的名词通常不须用关系代词。 Unnecessary: In 1970 India dedicated a nuclear power plant near Bombay, which was built with American assistance. Improved: In 1970 India dedicated a nuclear power plant near Bombay, built with American assistance. Unnecessary: During this period, Churchill spoke for a nation which was undivided and curiously happy, as it has never been in my lifetime, before or since. Improved: During this period, Churchill spoke for a nation undivided and curiously happy, as it has never been in my lifetime, before or since. Unnecessary: Justice theories have a long tradition, which goes back to Plato and Aristotle in the 5th century B.C. Improved: Justice theories have a long tradition, going back to Plato and Aristotle in the 5th century B.C. Unnecessary: Shirley Temples father blew nearly the entire $3 million that she made by tap dancing which made her famous in the movies. Improved: Shirley Temples father blew nearly the entire $3 million she made tap dancing her way to fame in the movies. Unnecessary: We told them they were the victims who deserved sympathy the most. Improved: We told them they were the victims, most deserving of sympathy. Unnecessary: Only a person who is oblivious to the facts of modern life would doubt the need of vocational education today. Better: Only a person oblivious to the facts of modern life would doubt the need of vocational education today. Unnecessary: Not everyone in North America likes the taste of green tea, whether it contains caffeine or not. Better: With or without caffeine, not everyone in North America likes the taste of green tea. Unnecessary: Usually the Washington family married people who were socially better off than themselves, but the second marriage of Georges father was an exception. Better: Usually the Washingtons married their social betters, but the second marriage of Georges father was an exception. Unnecessary: In some instances, a letter can take ten days by air and six to eight weeks by ship to reach the person to whom the letter is addressed. Better: In some instances, a letter can take ten days by air and six to eight weeks by ship to reach its intended receiver.