Regular verb: stumble - stumbled - stumbled
Present | Present continuous | Preterite | Preterite continuous |
don't I stumble? don't you stumble? doesn't he stumble? don't we stumble? don't you stumble? don't they stumble? | am I not stumbling? aren't you stumbling? isn't he stumbling? aren't we stumbling? aren't you stumbling? aren't they stumbling? | didn't I stumble? didn't you stumble? didn't he stumble? didn't we stumble? didn't you stumble? didn't they stumble? | wasn't I stumbling? weren't you stumbling? wasn't he stumbling? weren't we stumbling? weren't you stumbling? weren't they stumbling? |
Present perfect | Present perfect continuous | Pluperfect | Pluperfect continuous |
haven't I stumbled? haven't you stumbled? hasn't he stumbled? haven't we stumbled? haven't you stumbled? haven't they stumbled? | haven't I been stumbling? haven't you been stumbling? hasn't he been stumbling? haven't we been stumbling? haven't you been stumbling? haven't they been stumbling? | hadn't I stumbled? hadn't you stumbled? hadn't he stumbled? hadn't we stumbled? hadn't you stumbled? hadn't they stumbled? | hadn't I been stumbling? hadn't you been stumbling? hadn't he been stumbling? hadn't we been stumbling? hadn't you been stumbling? hadn't they been stumbling? |
Future | Future continuous | Future perfect | Future perfect continuous |
won't I stumble? won't you stumble? won't he stumble? won't we stumble? won't you stumble? won't they stumble? | won't I be stumbling? won't you be stumbling? won't he be stumbling? won't we be stumbling? won't you be stumbling? won't they be stumbling? | won't I have stumbled? won't you have stumbled? won't he have stumbled? won't we have stumbled? won't you have stumbled? won't they have stumbled? | won't I have been stumbling? won't you have been stumbling? won't he have been stumbling? won't we have been stumbling? won't you have been stumbling? won't they have been stumbling? |
Present | Present continuous | Past | Past continuous |
wouldn't I stumble? wouldn't you stumble? wouldn't he stumble? wouldn't we stumble? wouldn't you stumble? wouldn't they stumble? | wouldn't I be stumbling? wouldn't you be stumbling? wouldn't he be stumbling? wouldn't we be stumbling? wouldn't you be stumbling? wouldn't they be stumbling? | wouldn't I have stumbled? wouldn't you have stumbled? wouldn't he have stumbled? wouldn't we have stumbled? wouldn't you have stumbled? wouldn't they have stumbled? | wouldn't I have been stumbling? wouldn't you have been stumbling? wouldn't he have been stumbling? wouldn't we have been stumbling? wouldn't you have been stumbling? wouldn't they have been stumbling? |
Infinitive | Imperative |
Infinitive | Imperative | ||
to stumble | - - - |
Present | Past | ||
stumbling | stumbled |