
Regular verb: mark - marked - marked
Present | Present continuous | Preterite | Preterite continuous | 
| I mark you mark she marks we mark you mark they mark  | I'm marking you're marking she's marking we're marking you're marking they're marking  | I marked you marked she marked we marked you marked they marked  | I was marking you were marking she was marking we were marking you were marking they were marking  | 
Present perfect | Present perfect continuous | Pluperfect | Pluperfect continuous | 
| I've marked you've marked she's marked we've marked you've marked they've marked  | I've been marking you've been marking she's been marking we've been marking you've been marking they've been marking  | I'd marked you'd marked she'd marked we'd marked you'd marked they'd marked  | I'd been marking you'd been marking she'd been marking we'd been marking you'd been marking they'd been marking  | 
Future | Future continuous | Future perfect | Future perfect continuous | 
| I'll mark you'll mark she'll mark we'll mark you'll mark they'll mark  | I'll be marking you'll be marking she'll be marking we'll be marking you'll be marking they'll be marking  | I'll have marked you'll have marked she'll have marked we'll have marked you'll have marked they'll have marked  | I'll have been marking you'll have been marking she'll have been marking we'll have been marking you'll have been marking they'll have been marking  | 
Present | Present continuous | Past | Past continuous | 
| I'd mark you'd mark she'd mark we'd mark you'd mark they'd mark  | I'd be marking you'd be marking she'd be marking we'd be marking you'd be marking they'd be marking  | I'd have marked you'd have marked she'd have marked we'd have marked you'd have marked they'd have marked  | I'd have been marking you'd have been marking she'd have been marking we'd have been marking you'd have been marking they'd have been marking  | 
Infinitive | Imperative | 
Infinitive | Imperative | ||
| to mark | mark Let's mark mark  | 
Present | Past | ||
| marking | marked |