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what has sulfur been used in the past?what has sulfur been used in the past?
What else can I help you with?
Has the energy source been used in the past?
Yes it has been successful in the past
What has sulfur been used in the past?
what has sulfur been used in the past?what has sulfur been used in the past?
What is Have been and had been?
Have been is present tense and had been is past tense.
What is a past participle of been?
Have been or Has been IS the past participle......it is equivalent to "was".
Has biomass energy source been successfully used in the past?
Yes it has been successful in the past
What is the different between the have and have been?
Have is used for present and Have been is used for past continous.
What is the past participle of use?
Used (e.g "It had been used for...", "John was used", etc.)
What does 'been' mean?
It is the past participle of "be," to exist.
Is been a verb?
"Been" is the past participle of the verb "be," used to indicate a state or condition that was present in the past.
You always get confused with the grammatical meaning or use of would have been is would have been in the past tense or future tense?
"Would have been" is used to talk about hypothetical situations or events that did not happen in the past. It is used to describe unrealized possibilities or regrets about the past. It is not used to refer to events in the future.
Have been and had been?
"Have been" is used in present perfect tense to indicate an action that began in the past and continues to the present. "Had been" is used in past perfect tense to indicate an action that was completed before another past action or time.
Where to use have been has been had been?
Have been and has been are both forms of present perfect.Use have been for I and plural subjects egI have been to China. They have been to China. The doctors have been to China.Use has been for he/she/it and singular subjects eghe has been to China. The boy has been to China.Present perfect is used to talk about something that happened in the past but has result now or is important nowHad been is past perfect the same form is used for all subjects egHe has been to China. We had been to China The doctor had been to China.Past perfect is usually used to talk about something that happened in the past before another thing that happened in the past (past simple).eg He had been to China when I last saw him. - saw = past simple
