Grammar Point
expressions (phrases, clauses, etc.)
exp 
adjective (keiyoushi) - yoi/ii class
adj-ix 
ほうがいい

had better ...

after past tense verb

Verb Past Tense + ほうがいい

This structure is used to give strong advice or a recommendation to someone. It suggests that a specific course of action is the better choice among alternatives.

Verb Past Tense

The past tense (た form) of the verb is used to indicate a strong suggestion or piece of advice.

You had better go home.

You had better eat.

You had better buy this book.

Note

Using the past tense form of the verb before ほうがいい is the standard way to give advice in Japanese, even though the action will happen in the future. Using the present tense instead can sound like a simple comparison rather than a strong recommendation. To say someone 'had better not' do something, use the Verb Negative Present form followed by ほうがいい.

Words: 
方がいいほうがいい
方が良いほうがいい
方が良いほうがよい
ほうが良いほうがいい
ほうが良いほうがよい
方がよいほうがよい
Radicals of radicals