Had better

1. Form:

                   Had better + main verb

Short Form:       ‘d better + main verb

Example: 

You had better build a strong personality to succeed your life!

You ‘d better build a strong personality to succeed your life!

2. Use: 

Advisability, advice 

3. The Negative Fom:

Had better + not + main verb

Example:

You had better not eat fast food!

4. The Interrogative Fom:

 Had + subject + better + main verb + object?

Example:

Had he better resign from his job?