You had better not have gone there. - Oraya gitmeseydin iyi olurdu.
You had better not have gone there.
Oraya gitmeseydin iyi olurdu.
You had better have gone by ship. - Gemiyle gitseydin iyi olurdu.
You had better have gone by ship.
Gemiyle gitseydin iyi olurdu.
Will we get it finished? / We had better..