Present participle; Past participle - frowning - frowned Present - frown - frown - frowns - frown - frown - frown Past - frowned - frowned - frowned - frowned - frowned - frowned Future - will frown - will frown - will frown - will frown - will frown - will frown Present conditional - would frown - would frown - would frown - would frown - would frown - would frown Present Perfect - have frowned - have frowned - has frowned - have frowned - have frowned - have frowned Past Perfect - had frowned - had frowned - had frowned - had frowned - had frowned - had frowned Future Perfect - will have frowned - will have frowned - will have frowned - will have frowned - will have frowned - will have frowned Past conditional - would have frowned - would have frowned - would have frowned - would have frowned - would have frowned - would have frowned Imperative - - - frown - - - - - - - -