interpose: implies no more than this: a road ~d the house and the beach.

interfere: implies a getting in the way or otherwise hindering: noise ~d with my concentration.  get in the way固定搭配   hinder和interfere互释,都有妨碍耽误的意思，使事情不能顺利进行，如the rain hindered our climbing下雨妨碍了我们爬山，可以记成HI问候语


intervene: may imply a coming between two things in space or time or a stepping in to halt or settle a quarrel or conflict: family duties ~d, and the work came to a halt.


mediate: implies an intervening between hostile factions or conflicting ideas or principles: chosen to ~ between union and management.


intercede: implies an acting in behalf of another, often an offender, to seek mercy or forgiveness: asked to ~ on the daughter's behalf.   （in behalf of较罕见，美国人有时会用=on behalf of，都有两个意思 1、做某人代表representative 2、为了某人利益benefit，如he spoke on behalf of all the members of the faculty and staff他代表全体教职员工讲话，如I did all I could in behalf of my friend我为了朋友的利益做了所有，如新四第2篇中how many spiders are engaged in this work on our behalf有多少只蜘蛛为了我们（的利益而）从事这项工作？  in和on实际已没有区别）

 
interpose在之间: 仅表示在二者之间，interfere干扰: 指挡路或类似的干扰妨碍，intervene干预介入: 表示"进入"二者之间的时空，为了终止争吵冲突，mediate调停: 指在敌对派系或冲突观点之间的干预，intercede说情求情: 指为他人，通常是犯了错的人（的利益或代表该人）请求宽恕谅解


记忆方法: 1）首字母IIIMI想成5个我<==介入      薛之谦有首歌叫《几个你》

         2）介入的意思是走到之间mean to come or go between.