求问 有没有 had better do sth rather than do的用法

求问 有没有 had better do sth rather than do的用法 有had better not to do sth. 有had better那有没有have better啊? had better do=? had better do sth与had better to do sth用法有区别吗?什么区别? 有没有you should better do这个句型?如果有,那么You had better 和它有何区别?其否定形式是啥?如果没有,那么有没有You should better to do 这个句型? had better not do sth Is it right?我问的是语法是否正确：had better not do sth had better do something 和would better do something 有什么区别? 是had better to do还是had better do had better do还是had better to do had better +do sth 还是had better +to do sth had better(not) do sth... had better do等于什么 英语,have better do 和 had better do有什么区别?have to do 和 had to do 有什么区别? I had better ___(do/to do) 是had better do sth还是have better do sth have better do sth.和had better do sth. 问一下had better和might as well的区别?因为有个外国朋友告诉我had better只有上级对下级时才这样说,might as well就没有这方面的界限,是这样吗?