had batter/would rather

I had better (do).  আমি বরং (করি)। 
I had better not (do).
I would rather (do). আমি বরং (করি)। 
I would rather not (do). 
I would rather (do) than (go). আমি বরং যাব তবুও (করব) না। 
I would rather die than take bribe. আমি বরং মরব তবুও ঘুষ খাব না।