An example of this is "She has had a lot of work to do"
yes
The word "has" is not a future perfect verb. It is a present tense verb that functions as a helping verb for forming perfect tenses. In future perfect tense, "has" is combined with the auxiliary verb "will have" to show an action that will be completed at some point in the future.
Neither. It is a form of the linking verb 'become' (is now). The present perfect tense of a verb uses "has" or "have" as a helper verb.
"They have" is the subject and auxiliary verb parts of the present perfect tense. Following these should be a past participle of a verb to complete the tense.
"have tried" is the present perfect tense.
"You have" is present perfect tense.
The present perfect tense of the verb "study" is "have studied."
Present perfect tense.
The present perfect tense of the verb "study" is "have studied."
The present perfect tense of the verb "practice" is "have practiced" or "has practiced."
Have been is a verb phrase.As it is used in this sentence the verb have is a helping or auxiliary verb
No, the use of "had" is not correct after the helping verb "has" in the present perfect tense. In the present perfect tense, "has" is used with past participle verbs to indicate actions that have been completed or happened at an indefinite time in the past. So, the correct structure is "has + past participle" (e.g., "has gone," "has eaten").