The present progressive tense of investigate is:
The present tense of 'knew' is 'know'.
The present perfect tense of clean is:I/You/We/They have cleaned.He/She/It has cleaned.
It is "clean/cleans".
Annoying can be an adjective or a present tense verb - but not a noun.
The word 'devastating' is the present participle, present tense of the verb to devastate. The present participle of the verb is also a gerund, a verb form that can function as a noun. The present participle of the verb also functions as an adjective.The noun form of the verb to devastate is devastation.
The present perfect progressive tense of the verb "to investigate" is "have 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 past perfect progressive tense of "to investigate" is "had been investigating."
Yes, "You were speaking" is an example of the past progressive tense, which indicates an ongoing action that was happening in the past. The present progressive tense would be "You are speaking."
The five progressive tenses in English are: present progressive (e.g., I am eating), past progressive (e.g., She was watching), future progressive (e.g., They will be sleeping), present perfect progressive (e.g., We have been studying), and past perfect progressive (e.g., He had been working).
"Has been singing" is in the present perfect progressive tense. "Is singing" is the present progressive tense.
The present progressive tense of begin:I am beginning.You/We/They are beginning.He/She/It is beginning.
A verb is needed for the present progressive tense. Horses is a plural noun.Example of horse as the subject of a sentence in the present progressive tense: The horses are galloping.
The present progressive tense of place is:I am placing.You/We/They are placing.He/She/It is placing.
The present progressive tense of "hear" is:I am hearing.He/She/It is hearing.You/We/They are hearing.
The present progressive tense of call is:I am calling.You/We/They are calling.He/She/It is calling.
The present progressive tense of withdraw is:I am withdrawing.You/We/They are withdrawing.He/She/It is withdrawing.