past: I was; you were; he/she/it was present: I am; you are; he/she/it is
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.
what is present past
Past - was Present - is Future - will be
Present - am. Past - was and were.
The past tense of improve is improved.
past: I did, you did, he/she/it did; present: I do, you do, he/she/it/does
Present tense - clean. Past tense - cleaned. Present tense - work. Past tense - worked. Present tense - play. Past tense - played.
Seek is present tense, and seeking is the present participle. Sought is the past tense and past participle.
The past tense of improve is "improved", and the past participle is also "improved".
Studied is the past participle of study. Studying is the present participle.