I/you/we/they have been investigating. He/she/it has been investigating.
The present tense of investigating is:I/You/We/They investigate.He/She/It investigates.The present participle is investigating.
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 tense is:I/You/We/They inform.He/She/It informs.
The future perfect tense of "search" is "will have searched."
The present tense of "inform" is "inform."
The present perfect progressive tense of "investigate" is "has been investigating."
The past perfect progressive of investigate is had been investigating.
present tense past tense future tense present perfect tense past perfect tense future perfect tense present progressive tense past progressive tense future progressive tense present perfect progressive tense past perfect progressive tense future perfect progressive tense
The present progressive tense of investigate is:I am investigating.You/We/They are investigating.He/She/It is investigating.
There are actually 6: Present progressive tense Present perfect progressive tense Past progressive tense Past perfect progressive tense Future progressive tense Future perfect progressive tense The progressive tense is also known as the continuous tense.
Present perfect tense.
"Has been singing" is in the present perfect progressive tense. "Is singing" is the present progressive tense.
The present perfect progressive tense of print is:I/You/We have been printing.He/She/It has been printing.
I/We/You/They have been cleaningHe/She/It has been cleaning
The past perfect progressive tense is formed with the auxiliary verbs had + been and a present participle. The past perfect progressive tense of dance is had been dancing.
Have/has been planning is the present perfect progressive of plan.I/We/You/They have been planningHe/She/It has been planning
going <Supv. note: this is the present progressive or the gerund.> Present perfect is "have/has + gone"