induce: implies an influencing of the reason or judgment often by pointing out the advantages or gains that depend upon the desired decision: ~d them to vote for his proposal.  


persuade: implies appealing as much to the emotions as to reason by such things as pleas, entreaty, or expostulation in attempting to win over: ~d them to obey the ceasefire.     （appeal有3个意思  1、请求、诉诸to request，如she appealed to Germany for political asylum请求避难，如本例  2、上诉，如an appeal court/judge上诉法庭/法官，如to file/lodge an appeal提出上诉，如he said they would appeal against the decision他说他们将对该决议提出上诉 3、吸引to attract，如these topics appeal to youngsters对年轻人有吸引力）    （plea请求理解同情宽容等, their plea for a quieter society他们请求构建更安静的社会)   (entreat劝说: to persuade or overcome resistance劝说或克服抵抗,如entreated him to change his mind劝说他改变主意)   expostulate劝诫、反对，表示积极解释反对的原因，和object反对在一组


prevail: usually used with on or upon, carries a strong implication of overcoming opposition or reluctance with sustained argument or pressure or cogent appeals: ~ed upon them to stay for the night.   cogent有说服力令人信服的，表示既证据确凿又表达有力


get: the most neutral of these terms, can replace any of them, especially when the method by which a decision is brought about is irrelevant or deliberately not stressed: finally ~ the boy to do his homework.


induce引导劝说: 表示指出优势收益，以引导(影响)他人推理判断，persuade劝说: 指请求劝说劝诫，既引导推理也引导感情，prevail说服: 指持续说理劝说，化解了反对和不愿意，get使: 通用，可替代其它词，用于无需说明或强调具体方法的情况


记忆方法: 1）首字母IPPG重组成PPIG胖猪<==要人劝导   "引"有2个意思 1、拉 2、招来导致。引的字形像人在拉弓，本义是"开弓"，引申指"拉"，如牵引引力穿针引线；开弓是"向自身方向"拉，故又引申为"招来导致"，如引进引入招引指引引导引诱引用引言引人入胜引无数英雄竞折腰     "导"的意思是"指引"，导的本字，上面是首表示人，下边是"寸"表示手，再下面是止表示脚，合在一起的意思是: "人走路时需要得到指引"，还引申出"传递，或启发"，和本义紧密相关。如领导引导开导向导导游导游导师导演导致；传导导电导热；开导教导        "劝"有2个意思 1、说服，讲明事理让人听从，如劝说劝解劝导劝教劝谏劝慰劝戒劝进劝退  2、勉励，如劝勉劝业劝善，如荀子的劝学。劝是形声字，从力雚声guàn，简化字中"又"仅是一个符号，本义是"勉励"


         2）劝导的意思是让人做事作决定mean to move one to act or decide in a certain way.