Meaning
We use “had better” for strong advice, urgent advice (for others and yourself), and threats.
- You had better do the dishes before your mom comes home. [Strong advice]
- You had better run! Your train is coming. [Urgent advice]
- I‘d better put the turkey in the oven now or it won’t be ready in time.
- You‘d better shut your mouth, or I’ll shut it for you. [Threat]
Form
“Had better” refers to the immediate future, but its form is always past.
- You
havebetter do the dishes. - You had better do the dishes.
Follow “had better” with a bare infinitive form (the base form of the verb).
- You had better
doingthe dishes. - You had better do the dishes.
Do not forget the auxiliary “had.”
- Whoever is in there
bettercome out. - Whoever is in there had better come out.