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