Present participle; Past participle - testifying - testified Present - testify - testify - testifies - testify - testify - testify Past - testified - testified - testified - testified - testified - testified Future - will testify - will testify - will testify - will testify - will testify - will testify Present conditional - would testify - would testify - would testify - would testify - would testify - would testify Present Perfect - have testified - have testified - has testified - have testified - have testified - have testified Past Perfect - had testified - had testified - had testified - had testified - had testified - had testified Future Perfect - will have testified - will have testified - will have testified - will have testified - will have testified - will have testified Past conditional - would have testified - would have testified - would have testified - would have testified - would have testified - would have testified Imperative - - - testify - - - - - - - -