should 和ought to在用法上有什么异同?主要是不同之处是什么?

should 和ought to在用法上有什么异同?主要是不同之处是什么? had better,should,ought to的用法.should,和ought to 的用法是相近的吧?ought to呢, should 和 ought to 的不同点、相同点、和用法. ought to的用法ought to和should有些像,那么should I do so?should改成ought to该怎么变. Should和 ought to区别? should和ought to用法及怎样表达称赞和同情 ought to 和should有什么区别?还有它们的用法.最好再举两个例子. 1、急求Should的各种用法2、它和Ought to有什么区别 ought to的用法及否定形式和should有什么区别呀? should和ought to有和区别 should 和 ought to 有什么区别? ought to和should的区别 ought to和should的区别? ought to和should有什么区别? ought to 和 should的区别? had better/should/ought to的具体用法 should/ ought to have should,ought to区别