had better do等于什么

had better do等于什么 had better do sth 等于什么句型 had better do=? had better do sth与had better to do sth用法有区别吗?什么区别? 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... 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. i can do better in math 同意句do better in 等于什么 英语翻译提示had better not do sth 有had better not to do sth. He had better do some r______. had better do中的had是不是表示过去式