English verb conjugation
TO FAIL

Regular verb: fail - failed - failed

Indicative

Present	Present continuous	Preterite	Preterite continuous
I fail you fail she fails we fail you fail they fail	I'm failing you're failing she's failing we're failing you're failing they're failing	I failed you failed she failed we failed you failed they failed	I was failing you were failing she was failing we were failing you were failing they were failing
Present perfect	Present perfect continuous	Pluperfect	Pluperfect continuous
I've failed you've failed she's failed we've failed you've failed they've failed	I've been failing you've been failing she's been failing we've been failing you've been failing they've been failing	I'd failed you'd failed she'd failed we'd failed you'd failed they'd failed	I'd been failing you'd been failing she'd been failing we'd been failing you'd been failing they'd been failing
Future	Future continuous	Future perfect	Future perfect continuous
I'll fail you'll fail she'll fail we'll fail you'll fail they'll fail	I'll be failing you'll be failing she'll be failing we'll be failing you'll be failing they'll be failing	I'll have failed you'll have failed she'll have failed we'll have failed you'll have failed they'll have failed	I'll have been failing you'll have been failing she'll have been failing we'll have been failing you'll have been failing they'll have been failing

Conditional

Present	Present continuous	Past	Past continuous
I'd fail you'd fail she'd fail we'd fail you'd fail they'd fail	I'd be failing you'd be failing she'd be failing we'd be failing you'd be failing they'd be failing	I'd have failed you'd have failed she'd have failed we'd have failed you'd have failed they'd have failed	I'd have been failing you'd have been failing she'd have been failing we'd have been failing you'd have been failing they'd have been failing

Infinitive

Imperative

Infinitive		Imperative
to fail		fail Let's fail fail

Participle

Present	Past
failing	failed