Ihad better
{meaning
fwe use had better to give strong advice, or to tell people what to do (including I ourselves).
You'd better turn that music down before your Dad gets angry. i > Iťs seven o'clock. I'd better put the meat in the oven. Had better refers to the immediate future. It is more urgent than should or ought Compare:
/ really ought to go and see Fred one of these days. - Well you'd better do it i;    soon - he's leaving for South Africa at the end of the month. Had better is not used in polite requests. Compare: Could you help me, if you've got time? (request) You'd better help me. If you don't, there'll be trouble, (order/threat) Note that had better does not usually suggest that the action recommended would be better than another one that is being considered - there is no idea of comparison. The structure means 'It would be good to ...', not 'It would be better to...'.
forms
Had better refers to the immediate future, but the form is always past (have better is impossible). After had better we use the infinitive without to. 1'   It's late -you had better hurry up. (not ... you Iwve better...) (not .. -you had better hurrying J to hurry...) We normally make the negative with had better not + infinitive. You'd better not wake me up when you come in. (You hadn't better wake me ... is possible but very unusual.) ; A negative interrogative form Hadn't... better...? is possible.
Hadn't we better tell him the truth? "Normal unemphatic short answer forms are as follows: Shall I put my clothes away?~ You'd better! He says he won't tell anybody. ~He'd better not. Had is sometimes dropped in very informal speech. You better go now.       I better try again later.