you had better not to spend...

题目

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

答案

第二个对
had better do
had better not do
就是这样,我可以肯定,没有to