to investigate
Regular verb: investigate - investigated- investigated

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
I don't investigate
you don't investigate
she doesn't investigate
we don't investigate
you don't investigate
they don't investigate 	I'mnot investigating
youaren't investigating
sheisn't investigating
wearen't investigating
youaren't investigating
theyaren't investigating	I didn't investigate
you didn't investigate
she didn't investigate
we didn't investigate
you didn't investigate
they didn't investigate 	Iwasn't investigating
youweren't investigating
shewasn't investigating
weweren't investigating
youweren't investigating
theyweren't investigating	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
I haven't investigated
you haven't investigated
she hasn't investigated
we haven't investigated
you haven't investigated
they haven't investigated	I haven't  been investigating
you haven't  been investigating
she hasn't  been investigating
we haven't  been investigating
you haven't  been investigating
they haven't  been investigating	I hadn't investigated
you hadn't investigated
she hadn't investigated
we hadn't investigated
you hadn't investigated
they hadn't investigated	I hadn't been investigating
you hadn't been investigating
she hadn't been investigating
we hadn't been investigating
you hadn't been investigating
they hadn't been investigating	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
I won't investigate
you won't investigate
she won't investigate
we won't investigate
you won't investigate
they won't investigate 	I won't be investigating
you won't be investigating
she won't be investigating
we won't be investigating
you won't be investigating
they won't be investigating	I won't have investigated
you won't have investigated
she won't have investigated
we won't have investigated
you won't have investigated
they won't have investigated	I won't have been investigating
you won't have been investigating
she won't have been investigating
we won't have been investigating
you won't have been investigating
they won't have been investigating	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
I wouldn't investigate
you wouldn't investigate
she wouldn't investigate
we wouldn't investigate
you wouldn't investigate
they wouldn't investigate 	I wouldn't be investigating
you wouldn't be investigating
she wouldn't be investigating
we wouldn't be investigating
you wouldn't be investigating
they wouldn't be investigating	I wouldn't have investigated
you wouldn't have investigated
she wouldn't have investigated
we wouldn't have investigated
you wouldn't have investigated
they wouldn't have investigated	I wouldn't have been investigating
you wouldn't have been investigating
she wouldn't have been investigating
we wouldn't have been investigating
you wouldn't have been investigating
they wouldn't have been investigating	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to investigate 	 	do not investigate
Let's not investigate
do not investigate 	 	

Participle 	
Present 	Past 	 	 	
investigating	investigated