sb.happen to do sth.意思辨析是“某人碰巧要去做某事”还是“某人碰巧做某事”?

sb.happen to do sth. sth.happen to sb. happen 有 sth happen to sb或者sb happen to do sth 那么occur同样的用法吗? sth.happen to sb.造句 happen to sb和happen to do sth 造句并解释造的句子 用sth happen to sb 造句 do sb.to do sth. sb.+happen+to do sth.句型中不定式做什么成分? occur to /happen toit 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 用happen to do和happen to sb.造句 it happen to sb that 和 sb happen to do sth 表达的意思一样么我知道有 sth happen to sb 某人发生某事 .sb happen to do sth .某人碰巧做某事.但 it happne that ...表示是碰巧还是发生呢 做好有例子 invite sb to do sth teach sb.to do sth. keep sb to do sth told sb.to do sth. get sb.to do sth live sb to do sth ask sb to do sth