to intervene
Regular verb: intervene - intervened- intervened

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
I intervene
you intervene
she intervenes
we intervene
you intervene
they intervene 	I'mintervening
you'reintervening
she'sintervening
we'reintervening
you'reintervening
they'reintervening	I intervened
you intervened
she intervened
we intervened
you intervened
they intervened	Iwasintervening
youwereintervening
shewasintervening
wewereintervening
youwereintervening
theywereintervening	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
I've intervened
you've intervened
she's intervened
we've intervened
you've intervened
they've intervened	I'vebeen intervening
you'vebeen intervening
she'sbeen intervening
we'vebeen intervening
you'vebeen intervening
they'vebeen intervening	I'd intervened
you'd intervened
she'd intervened
we'd intervened
you'd intervened
they'd intervened	I'd been intervening
you'd been intervening
she'd been intervening
we'd been intervening
you'd been intervening
they'd been intervening	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
I'll intervene
you'll intervene
she'll intervene
we'll intervene
you'll intervene
they'll intervene 	I'll be intervening
you'll be intervening
she'll be intervening
we'll be intervening
you'll be intervening
they'll be intervening	I'll have intervened
you'll have intervened
she'll have intervened
we'll have intervened
you'll have intervened
they'll have intervened	I'll have been intervening
you'll have been intervening
she'll have been intervening
we'll have been intervening
you'll have been intervening
they'll have been intervening	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
I'd intervene
you'd intervene
she'd intervene
we'd intervene
you'd intervene
they'd intervene 	I'd be intervening
you'd be intervening
she'd be intervening
we'd be intervening
you'd be intervening
they'd be intervening	I'd have intervened
you'd have intervened
she'd have intervened
we'd have intervened
you'd have intervened
they'd have intervened	I'd have been intervening
you'd have been intervening
she'd have been intervening
we'd have been intervening
you'd have been intervening
they'd have been intervening	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to intervene 	 	intervene
Let's intervene
intervene 	 	

Participle 	
Present 	Past 	 	 	
intervening	intervened