ought to do和have to do以及should do有什么区别?

ought to do和have to do以及should do有什么区别? should/ ought to have have to do .should do .ought to do .must.的区别 should ought to have done ought to 和ought 的区别 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. ought to Should和 ought to区别? 高中英语小问题ought to do 中 到底是 ought to 就是一个固定短语 还是 to do 是不定式用法to do 这里是不定式吗还是to 和ought 是连着的 和不定式没关系 ought to do sth 是什麽意思 ought to能否用do提问 ought to have done的意思 I really ought to have konwn better. what we ought to do to do well for our 关于ought to---You ought to have called him yesterday.---Yes,I know I__________________A ought to B ought to haveC ought to have done D ought to have done 英语中ought to,be supposed to do和should 的区别 M.r Zhang,what should I do after finishing the work?I think you ought to have a rest.为什么不用 ought to 提问? he didn't do well in the exam.he ought to have wrked hard at his lesson.为什么用ought to