
Regular verb: underperform - underperformed - underperformed
Present | Present continuous | Preterite | Preterite continuous |
| I underperform you underperform he underperforms we underperform you underperform they underperform | I'm underperforming you're underperforming he's underperforming we're underperforming you're underperforming they're underperforming | I underperformed you underperformed he underperformed we underperformed you underperformed they underperformed | I was underperforming you were underperforming he was underperforming we were underperforming you were underperforming they were underperforming |
Present perfect | Present perfect continuous | Pluperfect | Pluperfect continuous |
| I've underperformed you've underperformed he's underperformed we've underperformed you've underperformed they've underperformed | I've been underperforming you've been underperforming he's been underperforming we've been underperforming you've been underperforming they've been underperforming | I'd underperformed you'd underperformed he'd underperformed we'd underperformed you'd underperformed they'd underperformed | I'd been underperforming you'd been underperforming he'd been underperforming we'd been underperforming you'd been underperforming they'd been underperforming |
Future | Future continuous | Future perfect | Future perfect continuous |
| I'll underperform you'll underperform he'll underperform we'll underperform you'll underperform they'll underperform | I'll be underperforming you'll be underperforming he'll be underperforming we'll be underperforming you'll be underperforming they'll be underperforming | I'll have underperformed you'll have underperformed he'll have underperformed we'll have underperformed you'll have underperformed they'll have underperformed | I'll have been underperforming you'll have been underperforming he'll have been underperforming we'll have been underperforming you'll have been underperforming they'll have been underperforming |
Present | Present continuous | Past | Past continuous |
| I'd underperform you'd underperform he'd underperform we'd underperform you'd underperform they'd underperform | I'd be underperforming you'd be underperforming he'd be underperforming we'd be underperforming you'd be underperforming they'd be underperforming | I'd have underperformed you'd have underperformed he'd have underperformed we'd have underperformed you'd have underperformed they'd have underperformed | I'd have been underperforming you'd have been underperforming he'd have been underperforming we'd have been underperforming you'd have been underperforming they'd have been underperforming |
Infinitive | Imperative |
Infinitive | Imperative | ||
| to underperform | underperform Let's underperform underperform |
Present | Past | ||
| underperforming | underperformed |