don't I shudder? don't you shudder? doesn't he shudder? don't we shudder? don't you shudder? don't they shudder?
Present continuous
am I not shuddering? aren't you shuddering? isn't he shuddering? aren't we shuddering? aren't you shuddering? aren't they shuddering?
Preterite
didn't I shudder? didn't you shudder? didn't he shudder? didn't we shudder? didn't you shudder? didn't they shudder?
Preterite continuous
wasn't I shuddering? weren't you shuddering? wasn't he shuddering? weren't we shuddering? weren't you shuddering? weren't they shuddering?
Present perfect
haven't I shuddered? haven't you shuddered? hasn't he shuddered? haven't we shuddered? haven't you shuddered? haven't they shuddered?
Present perfect continuous
haven't I been shuddering? haven't you been shuddering? hasn't he been shuddering? haven't we been shuddering? haven't you been shuddering? haven't they been shuddering?
Pluperfect
hadn't I shuddered? hadn't you shuddered? hadn't he shuddered? hadn't we shuddered? hadn't you shuddered? hadn't they shuddered?
Pluperfect continuous
hadn't I been shuddering? hadn't you been shuddering? hadn't he been shuddering? hadn't we been shuddering? hadn't you been shuddering? hadn't they been shuddering?
Future
won't I shudder? won't you shudder? won't he shudder? won't we shudder? won't you shudder? won't they shudder?
Future continuous
won't I be shuddering? won't you be shuddering? won't he be shuddering? won't we be shuddering? won't you be shuddering? won't they be shuddering?
Future perfect
won't I have shuddered? won't you have shuddered? won't he have shuddered? won't we have shuddered? won't you have shuddered? won't they have shuddered?
Future perfect continuous
won't I have been shuddering? won't you have been shuddering? won't he have been shuddering? won't we have been shuddering? won't you have been shuddering? won't they have been shuddering?
Conditional
Present
wouldn't I shudder? wouldn't you shudder? wouldn't he shudder? wouldn't we shudder? wouldn't you shudder? wouldn't they shudder?
Present continuous
wouldn't I be shuddering? wouldn't you be shuddering? wouldn't he be shuddering? wouldn't we be shuddering? wouldn't you be shuddering? wouldn't they be shuddering?
Past
wouldn't I have shuddered? wouldn't you have shuddered? wouldn't he have shuddered? wouldn't we have shuddered? wouldn't you have shuddered? wouldn't they have shuddered?
Past continuous
wouldn't I have been shuddering? wouldn't you have been shuddering? wouldn't he have been shuddering? wouldn't we have been shuddering? wouldn't you have been shuddering? wouldn't they have been shuddering?