The present tense of investigating is:
I/you/we/they have been investigating. He/she/it has been investigating.
The past tense is informed.The present tense is:I/You/We/They inform.He/She/It informs.
The present tense of "inform" is "inform."
The present perfect tense of the verb "search" is "have searched" or "has searched." It's like saying, "I have searched for my keys everywhere except the one place I actually left them." So, next time you can't find your keys, just remember to use that present perfect tense while you tear your house apart looking for them.
The past tense is informed.
The present progressive tense of investigate is:I am investigating.You/We/They are investigating.He/She/It is investigating.
The present perfect progressive tense of "investigate" is "has been investigating."
I/you/we/they have been investigating. He/she/it has been investigating.
Have/Has been investigating.
I will/shall investigate
The past tense is investigated.
The verb is is the present tense.
The past perfect progressive of investigate is had been investigating.
The past tense of did is did. The present tense of did is do. The future tense of did is will do.
It was, (past tense) it is, (present tense) it will be( future tense)
Past tense I had Present tense I have Future Tense I will have
"Has" is in present tense. The past tense is "had".