Where possible, reduce the use of "which," "who" "that" "whom" "whether... or not" etc.
　　少用關系代詞
　　學會運用關系代詞是你學習英文過程中的一個重要的階段。學會少用它們則表明你取得了更大的進步。在校對你的作品時，仔細檢查一下所有的which’s, who’s that’s和whom’s是否必要。刪除不必要的關系代詞會使你的文章更精彩。
　　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.
　　(用兩個 that’s，讀起來很別扭)
　　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：被動語態(tài)修飾的名詞通常不須用關系代詞。