1.occurvi.发生,出现解析:【同】happen,takeplace【衍】occurrencen.发生【辨析】happen强调偶然性Therehappentobenomoneywithme.Itsohappensthat...takeplace指有计划的使某事发生Greatchangeshavetakenplaceinmyhometown.occur则包括了以上二者的意义,比较含糊。2.occur是一般用词,可指某事情偶然发生或者按照计划进行,在表示具体失去的名词作主语的时候,可与happen换用,但比较正式,跟to短语时,表示“想到”,而不是“发生”,比如I’mverysorryforallhappenedtoyou.AnideaoccurstomethatgoingtoSwitzerlandfortravelingwillbemarvelous!有一本书就是探究这两个词的差异性的,能在线阅读: