had better do还是had better to do

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 是had better do sth还是have better do sth had better do=? you had better not to do something 对还是you had better to not do something 最好不做某事是had better not do sth 还是had better not to do sth had better后接to do 还是接do had better not to do sth.还是别的结构?had better后面的动词怎么否定? had better(not) do sth... had better do等于什么 you had better not to spend...you had better not to spend too much time...you had better not spend too much time 以上两个句子哪个正确had better not do sth还是had better not to do sth • 最好不做某事是had better not do sth 还是had better not to do sth?... It's better do 还是 to do 那had better do 等better用法麻烦讲一下 had better not keep还是had better no keep I had better ___(do/to do) had better do rather than _______?do 还是to do呢? had better do中的had是不是表示过去式