It's a present perfect.
"Have studied" is in the present perfect tense. It is formed by using the auxiliary verb "have" followed by the past participle of the main verb.
The present perfect form of "study" is "have studied." For example, "I have studied for my exam."
Present: study Past: studied Past participle: studied
The present perfect tense of the verb "study" is "have studied."
The past perfect tense of "study" is "had studied."
The present perfect tense of the verb "study" is "have studied."
Present perfect is formed with: have/has + past participle.The past participle of study is studied. So the present perfect is:have studied --- I have studied English Grammarhas studied -- She has studied algebra
The verb is -- has studied. This is present perfect.Present perfect is formed with have/has + past participle.
The present perfect tense of the verb "study" is "have studied."
The present perfect form of "study" is "have studied." For example, "I have studied for my exam."
Present: study Past: studied Past participle: studied
The perfect tenses are formed using a combination of the auxiliary verb "have" (in its different forms) and the past participle of the main verb. For example, "I have eaten" (present perfect), "She had studied" (past perfect), "They will have arrived" (future perfect).
Present: show, Past: showed, Future: will show, Present Continuous: is showing, Present Perfect: has shown, Present Perfect Continuous: has been showing, Past Continuous: was showing, Past Perfect: had shown, Past Perfect Continuous: had been showing, Future Continuous: will be showing, Future Perfect: will have shown, Future Perfect Continuous: will have been showing.
Present perfect tense.
The present perfect forms are have studied, has studied.Examples:We have studied the results. (plural subject)He has studied the results. (singular subject)
Past perfect: had practiced Present perfect: I/We/You/They have practiced He/She/It has practiced
"Has transformed" is in the present perfect tense. It is used to indicate an action that started in the past and is still relevant in the present.
The verb phrase in past perfect is formed with - had + past participle.The past perfect verb phrase for study is had studied. A sentence like -- I had studied cooking -- tells you that sometime in the past I studied cooking but this sentence does not have much meaning by itself.Past perfect is often used with past simple to show that one thing happened in the past before another thing in the past. egI had studied cooking -- past perfectWe opened the cafe -- past simpleI had studied cooking before we opened the cafePast perfect can also be used in the 'if clause' of a conditional statement egIf you had studied your notes you wouldn't be in a panic now