词性变换
派生----后缀法
（1）.-ence -ance结尾的名词
Exist--existence存在occur--occurrence发生
refer--reference参考/指prefer-preference偏好，更喜欢differ-difference不同accept--acceptance接受
appear--appearance出现perform-performance履行
resist-resistance抵制guide-guidance指导
enter-entrance进入insure--insurance保险
important-importance重要性assist-assistance帮助
disturb--disturbance打扰inter--interference干扰，干预，Influential--influence影响，感化，violent---violence激烈，暴力，Significant--significance意义，意味。

（2）.-tion -sion结尾的名词
Produce--production生产introduce--introduction介绍Consume-consumption消费assume--assumption假设，认为Suppose--supposition假设，认为reduce--reduction减少
Describe--description描述receive--reception接收，接待处Protect-protection保护direct--direction指导，方向，指令Instruct--instruction指令suggest--suggestion建议
Construct--construction建设infect--infection注射
Reject--rejection驳斥object--objection反对
Edit--edition编辑exhibit--exhibition展览
Connect--connection练习intend--intention打算，意图
Solve--solution解决evolve--evolution进化
Destroy--destruction毁灭examine--examination检查，考试Inspire--inspiration激发，灵感starve--starvation饥饿
Liberate--liberation解放operate-operation操作
Hesitate--hesitation犹豫invite--invitation邀请
Motivate-motivation动力observe--observation观察Organize--organization组织transport--transportation交通Civilized--civilization文明realize--realization认识Recognize--recognition认出educate--education教育Prepare--preparation准备determine--determination决定，决心Expect-expectation期待form--formation形成
Consider--consideration考虑inform--information通知Occupy--occupation占有distribution--distribution分发Appreciate--appreciation欣赏，感激impress--impression印象Devote--devotion投入dedicate--dedication投入Frustrate--frustration沮丧，挫败感depress--depression 沮丧Explain--explanation解释pronounce--pronunciation发音Repeat--repetition重复express--expression表达Possess--possession拥有，财产discuss--discussion讨论Explode--explosion爆炸conclude--conclusion结论
Decide--decision决定divide--division分裂
Confuse--confusion迷惑expand--expansion膨胀，扩大Extend--extension延伸admit--admission承认permit--permission允许。