English verb conjugation
TO INVESTIGATE

Regular verb: investigate - investigated - investigated

Indicative

Present	Present continuous	Preterite	Preterite continuous
do I investigate? do you investigate? does he investigate? do we investigate? do you investigate? do they investigate?	am I investigating? are you investigating? is he investigating? are we investigating? are you investigating? are they investigating?	did I investigate? did you investigate? did he investigate? did we investigate? did you investigate? did they investigate?	was I investigating? were you investigating? was he investigating? were we investigating? were you investigating? were they investigating?
Present perfect	Present perfect continuous	Pluperfect	Pluperfect continuous
have I investigated? have you investigated? has he investigated? have we investigated? have you investigated? have they investigated?	have I been investigating? have you been investigating? has he been investigating? have we been investigating? have you been investigating? have they been investigating?	had I investigated? had you investigated? had he investigated? had we investigated? had you investigated? had they investigated?	had I been investigating? had you been investigating? had he been investigating? had we been investigating? had you been investigating? had they been investigating?
Future	Future continuous	Future perfect	Future perfect continuous
will I investigate? will you investigate? will he investigate? will we investigate? will you investigate? will they investigate?	will I be investigating? will you be investigating? will he be investigating? will we be investigating? will you be investigating? will they be investigating?	will I have investigated? will you have investigated? will he have investigated? will we have investigated? will you have investigated? will they have investigated?	will I have been investigating? will you have been investigating? will he have been investigating? will we have been investigating? will you have been investigating? will they have been investigating?

Conditional

Present	Present continuous	Past	Past continuous
would I investigate? would you investigate? would he investigate? would we investigate? would you investigate? would they investigate?	would I be investigating? would you be investigating? would he be investigating? would we be investigating? would you be investigating? would they be investigating?	would I have investigated? would you have investigated? would he have investigated? would we have investigated? would you have investigated? would they have investigated?	would I have been investigating? would you have been investigating? would he have been investigating? would we have been investigating? would you have been investigating? would they have been investigating?

Infinitive

Imperative

Infinitive		Imperative
to investigate		- - -

Participle

Present	Past
investigating	investigated