had better to do sth.和had better doing sth.的区别
问题描述：
had better to do sth.和had better doing sth.的区别
答
had better do sth
没有你说的那两种形式
答
（1)had better do sth.最好做某事
（2）had better to do sth.和had better doing sth.这两种形式都错误,不存在