It doesn't have a past tense as it isn't a verb.
To complete the sentence "schoolmates from present to past," you can list out the names of your current schoolmates followed by the names of those you have lost touch with or are no longer in school with. This could be a chronological list of individuals starting with those you currently interact with and ending with those from the past.
past: I was; you were; he/she/it was present: I am; you are; he/she/it is
The present perfect tense is used to indicate actions that happened at an unspecified time in the past, actions that started in the past and continue into the present, or actions that have just been completed. It is formed with the auxiliary verb "have" or "has" followed by the past participle of the main verb.
The present perfect tense of "they have" is "they have had."
Past - was Present - is Future - will be
Present tense: are Past tense: were
The complete paradigm is Take, Took, Taken Therefore Take is present, Took is past and Taken is the Past Participle.
It is hard to say because this is not a complete verb phrase It could be past.
past: I was; you were; he/she/it was present: I am; you are; he/she/it is
The present perfect tense is used to indicate actions that happened at an unspecified time in the past, actions that started in the past and continue into the present, or actions that have just been completed. It is formed with the auxiliary verb "have" or "has" followed by the past participle of the main verb.
There is a past, present, and future. There was a past; there is a present and there will be a future.
Have is present tense. The past tense is had.
The present perfect tense of "they have" is "they have had."
what is present past
Present tense: are Past tense: were
Past - was Present - is Future - will be
Schoolmates - 1930 was released on: USA: 28 April 1930
past: I did, you did, he/she/it did; present: I do, you do, he/she/it/does