to research
Regular verb: research - researched- researched

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
I research
you research
he researches
we research
you research
they research 	I'mresearching
you'reresearching
he'sresearching
we'reresearching
you'reresearching
they'reresearching	I researched
you researched
he researched
we researched
you researched
they researched	Iwasresearching
youwereresearching
hewasresearching
wewereresearching
youwereresearching
theywereresearching	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
I've researched
you've researched
he's researched
we've researched
you've researched
they've researched	I'vebeen researching
you'vebeen researching
he'sbeen researching
we'vebeen researching
you'vebeen researching
they'vebeen researching	I'd researched
you'd researched
he'd researched
we'd researched
you'd researched
they'd researched	I'd been researching
you'd been researching
he'd been researching
we'd been researching
you'd been researching
they'd been researching	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
I'll research
you'll research
he'll research
we'll research
you'll research
they'll research 	I'll be researching
you'll be researching
he'll be researching
we'll be researching
you'll be researching
they'll be researching	I'll have researched
you'll have researched
he'll have researched
we'll have researched
you'll have researched
they'll have researched	I'll have been researching
you'll have been researching
he'll have been researching
we'll have been researching
you'll have been researching
they'll have been researching	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
I'd research
you'd research
he'd research
we'd research
you'd research
they'd research 	I'd be researching
you'd be researching
he'd be researching
we'd be researching
you'd be researching
they'd be researching	I'd have researched
you'd have researched
he'd have researched
we'd have researched
you'd have researched
they'd have researched	I'd have been researching
you'd have been researching
he'd have been researching
we'd have been researching
you'd have been researching
they'd have been researching	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to research 	 	research
Let's research
research 	 	

Participle 	
Present 	Past 	 	 	
researching	researched