Regular verb: shudder - shuddered - shuddered
Simple form | V-ing form |
I must shudder you must shudder she must shudder we must shudder you must shudder they must shudder | I must be shuddering you must be shuddering she must be shuddering we must be shuddering you must be shuddering they must be shuddering |
Perfect | V-ing perfect |
I must have shuddered you must have shuddered she must have shuddered we must have shuddered you must have shuddered they must have shuddered | I must have been shuddering you must have been shuddering she must have been shuddering we must have been shuddering you must have been shuddering they must have been shuddering |
Simple form | V-ing form |
I mustn't shudder you mustn't shudder she mustn't shudder we mustn't shudder you mustn't shudder they mustn't shudder | I mustn't be shuddering you mustn't be shuddering she mustn't be shuddering we mustn't be shuddering you mustn't be shuddering they mustn't be shuddering |
Perfect | V-ing perfect |
I mustn't have shuddered you mustn't have shuddered she mustn't have shuddered we mustn't have shuddered you mustn't have shuddered they mustn't have shuddered | I mustn't have been shuddering you mustn't have been shuddering she mustn't have been shuddering we mustn't have been shuddering you mustn't have been shuddering they mustn't have been shuddering |
Simple form | V-ing form |
must I shudder? must you shudder? must she shudder? must we shudder? must you shudder? must they shudder? | must I be shuddering? must you be shuddering? must she be shuddering? must we be shuddering? must you be shuddering? must they be shuddering? |
Perfect | V-ing perfect |
must I have shuddered? must you have shuddered? must she have shuddered? must we have shuddered? must you have shuddered? must they have shuddered? | must I have been shuddering? must you have been shuddering? must she have been shuddering? must we have been shuddering? must you have been shuddering? must they have been shuddering? |
Simple form | V-ing form |
mustn't I shudder? mustn't you shudder? mustn't she shudder? mustn't we shudder? mustn't you shudder? mustn't they shudder? | mustn't I be shuddering? mustn't you be shuddering? mustn't she be shuddering? mustn't we be shuddering? mustn't you be shuddering? mustn't they be shuddering? |
Perfect | V-ing perfect |
mustn't I have shuddered? mustn't you have shuddered? mustn't she have shuddered? mustn't we have shuddered? mustn't you have shuddered? mustn't they have shuddered? | mustn't I have been shuddering? mustn't you have been shuddering? mustn't she have been shuddering? mustn't we have been shuddering? mustn't you have been shuddering? mustn't they have been shuddering? |