Present participle; Past participle - halving - halved Present - halve - halve - halves - halve - halve - halve Past - halved - halved - halved - halved - halved - halved Future - will halve - will halve - will halve - will halve - will halve - will halve Present conditional - would halve - would halve - would halve - would halve - would halve - would halve Present Perfect - have halved - have halved - has halved - have halved - have halved - have halved Past Perfect - had halved - had halved - had halved - had halved - had halved - had halved Future Perfect - will have halved - will have halved - will have halved - will have halved - will have halved - will have halved Past conditional - would have halved - would have halved - would have halved - would have halved - would have halved - would have halved Imperative - - - halve - - - - - - - -