occur to /happen to

题目

occur to /happen to
it occur to sb.to do sth ...与it occur to sb that从句..有何区别..
it happen to do sth 与it happen to that 从句..有何区别

答案

occur两个搭配：前者跟动词,后者跟主语从句,意思相同,为“...情况发生在某人身上”或“某人突然想到...”.
happen两个搭配：同上,只是没有“突然想到的意思”.