English verb conjugation
TO INVESTIGATE

Regular verb: investigate - investigated - investigated

Indicative

Present	Present continuous	Preterite	Preterite continuous
do I not investigate? do you not investigate? does he not investigate? do we not investigate? do you not investigate? do they not investigate?	am I not investigating? are you not investigating? is he not investigating? are we not investigating? are you not investigating? are they not investigating?	did I not investigate? did you not investigate? did he not investigate? did we not investigate? did you not investigate? did they not investigate?	was I not investigating? were you not investigating? was he not investigating? were we not investigating? were you not investigating? were they not investigating?
Present perfect	Present perfect continuous	Pluperfect	Pluperfect continuous
have I not investigated? have you not investigated? has he not investigated? have we not investigated? have you not investigated? have they not investigated?	have I not been investigating? have you not been investigating? has he not been investigating? have we not been investigating? have you not been investigating? have they not been investigating?	had I not investigated? had you not investigated? had he not investigated? had we not investigated? had you not investigated? had they not investigated?	had I not been investigating? had you not been investigating? had he not been investigating? had we not been investigating? had you not been investigating? had they not been investigating?
Future	Future continuous	Future perfect	Future perfect continuous
will I not investigate? will you not investigate? will he not investigate? will we not investigate? will you not investigate? will they not investigate?	will I not be investigating? will you not be investigating? will he not be investigating? will we not be investigating? will you not be investigating? will they not be investigating?	will I not have investigated? will you not have investigated? will he not have investigated? will we not have investigated? will you not have investigated? will they not have investigated?	will I not have been investigating? will you not have been investigating? will he not have been investigating? will we not have been investigating? will you not have been investigating? will they not have been investigating?

Conditional

Present	Present continuous	Past	Past continuous
would I not investigate? would you not investigate? would he not investigate? would we not investigate? would you not investigate? would they not investigate?	would I not be investigating? would you not be investigating? would he not be investigating? would we not be investigating? would you not be investigating? would they not be investigating?	would I not have investigated? would you not have investigated? would he not have investigated? would we not have investigated? would you not have investigated? would they not have investigated?	would I not have been investigating? would you not have been investigating? would he not have been investigating? would we not have been investigating? would you not have been investigating? would they not have been investigating?

Infinitive

Imperative

Infinitive		Imperative
to investigate		- - -

Participle

Present	Past
investigating	investigated