Present participle; Past participle - shivering - shivered Present - shiver - shiver - shivers - shiver - shiver - shiver Past - shivered - shivered - shivered - shivered - shivered - shivered Future - will shiver - will shiver - will shiver - will shiver - will shiver - will shiver Present conditional - would shiver - would shiver - would shiver - would shiver - would shiver - would shiver Present Perfect - have shivered - have shivered - has shivered - have shivered - have shivered - have shivered Past Perfect - had shivered - had shivered - had shivered - had shivered - had shivered - had shivered Future Perfect - will have shivered - will have shivered - will have shivered - will have shivered - will have shivered - will have shivered Past conditional - would have shivered - would have shivered - would have shivered - would have shivered - would have shivered - would have shivered Imperative - - - shiver - - - - - - - -