were/was to have done 可以代替would/should have done

were/was to have done 可以代替would/should have done Could have done would have done should have done should have done 可以换成 ought to have done嘛? 英语 would have done 和should have done 的用法 would rather have done 与should have done 的区别 were to have done 造句, should ought to have done should have done 与would have done有区别吗?有would/should had done would have done,might have done,could have done,should have would/could//should/must have done 区别could,might,would,should have done was to do&was to have done