When you use these elements you are using the present perfect tense.
When using "have" or "has" in combination with the past participle, you are creating present perfect tense. "Have" is used with plural pronouns (I, you, we, they), and "has" with singular pronouns (he, she, it). This construction indicates actions that started in the past and continue into the present or are relevant to the present.
The past participle form of the word "use" is "used."
"Use" is a regular verb; therefore, its past participle is "used".
The present participle of the verb "use" is "using" and the past participle is "used."
Used (e.g "It had been used for...", "John was used", etc.)
The past participle of "do" is "done." The past participle of "have" is "had."
The past participle form of the word "use" is "used."
"Use" is a regular verb; therefore, its past participle is "used".
Yes you can.
It is called the present perfect tense because the action is considered "perfect," meaning it is completed, in relation to the present moment. The tense indicates that the action has occurred at some point before now but may still have relevance to the current time.
"ridden" is the past participle of "rode"
The present participle of the verb "use" is "using" and the past participle is "used."
Used (e.g "It had been used for...", "John was used", etc.)
All are past and past participle in tense.
The past participle of "do" is "done." The past participle of "have" is "had."
No, when using the present perfect tense with a singular subject, the verb "has" is followed by the past participle of the main verb, not the past tense form. In the sentence you provided, "has opened" is the correct form for the present perfect tense.
The past participle used with "drunk" is "drunk." For example, "He has drunk too much."
The past participle of "am not" is "have not been."