
Irregular verb: begin - began - begun
| Present | Present continuous | Preterite | Preterite continuous | 
| I begin you begin he begins we begin you begin they begin | I'm beginning you're beginning he's beginning we're beginning you're beginning they're beginning | I began you began he began we began you began they began | I was beginning you were beginning he was beginning we were beginning you were beginning they were beginning | 
| Present perfect | Present perfect continuous | Pluperfect | Pluperfect continuous | 
| I've begun you've begun he's begun we've begun you've begun they've begun | I've been beginning you've been beginning he's been beginning we've been beginning you've been beginning they've been beginning | I'd begun you'd begun he'd begun we'd begun you'd begun they'd begun | I'd been beginning you'd been beginning he'd been beginning we'd been beginning you'd been beginning they'd been beginning | 
| Future | Future continuous | Future perfect | Future perfect continuous | 
| I'll begin you'll begin he'll begin we'll begin you'll begin they'll begin | I'll be beginning you'll be beginning he'll be beginning we'll be beginning you'll be beginning they'll be beginning | I'll have begun you'll have begun he'll have begun we'll have begun you'll have begun they'll have begun | I'll have been beginning you'll have been beginning he'll have been beginning we'll have been beginning you'll have been beginning they'll have been beginning | 
| Present | Present continuous | Past | Past continuous | 
| I'd begin you'd begin he'd begin we'd begin you'd begin they'd begin | I'd be beginning you'd be beginning he'd be beginning we'd be beginning you'd be beginning they'd be beginning | I'd have begun you'd have begun he'd have begun we'd have begun you'd have begun they'd have begun | I'd have been beginning you'd have been beginning he'd have been beginning we'd have been beginning you'd have been beginning they'd have been beginning | 
| Infinitive | Imperative | 
| Infinitive | Imperative | ||
| to begin | begin Let's begin begin | 
| Present | Past | ||
| beginning | begun |