Can you describe today in a past tense story?

Yes, you can. It depends on the context and the narrative style you want to create.

Yes, you can. For example, 'I walk to the old house where I grew up. The walls are still the same as they were years ago, but now there are new curtains in the windows.' This mixing can add depth and a sense of time continuity to the story.

A boy lived in a small town. One day, he visited his grandparents. His grandfather showed him an old photo album. He looked at the pictures of his family in the past. He listened to his grandfather's stories about when he was young. It was a very interesting visit for the boy. He felt so close to his family's history.

Sure you can. It depends on the style and effect you want to create. Sometimes, it can add variety and emphasis.

Yes. It could be used to create a sense of timelessness or to draw attention to specific moments. However, it needs to be used sparingly and with a clear purpose to avoid disrupting the overall past tense narrative.

The marker of the present perfect tense is already or has already passed, indicating that the action has continued from a certain time in the past until now. For example: - She had already walked for an hour. - He had learned a foreign language before. The marker of the past perfect tense is used to indicate that the action has been completed before a certain time in the past. For example: He had been learning a foreign language for a year. - She had been walking for an hour and five minutes. It should be noted that the past perfect tense is usually used to indicate actions that have been completed before a certain time in the past, while the present perfect tense is used to indicate actions that are currently being done.

Present tense can come into play in past tense fiction when it's essential to give a sense of timelessness or universality to a particular experience. Sometimes, authors use it to break the traditional narrative flow and add a unique flavor to the story.

Well, last Christmas Eve, I was walking in the town. All the shops were lit up with Christmas lights. I saw a little boy crying because he lost his balloon. I bought him a new one. He smiled at me. It made my Christmas Eve very special.

Sure, they can. Many novels are written in past tense to tell a story that has already happened.

Sure, it can. Many novels are written in past tense and it's a common choice for storytellers.