Ali, I hope this will explain some of the differences in usage between “at”, “it” and “on”
| AT | IN | ON |
|---|---|---|
| PLACE Definite location - I would like to meet you at the park tomorrow. My son is at school now. Exact Address - I live at 123 Main Street. Events - I met her at the football game. Workplaces - I have been hired to work at the drugstore. I work at the mall. | PLACE Smaller location within a larger location - I am in my bedroom right now. He is in his house now. I live in Toronto, which is in Canada. | PLACE Supported by something - My cell is on the chair. He left his coat on the floor. I am walking on the sidewalk. Approximate address - I live on Main Street. Tom lives on the north side of town. Public transportation - I am on the bus now. Tomorrow at this time, I will be on the train. |
| TIME Exact time - She went to see the doctor yesterday at one o'clock. Let's get together tomorrow at 2. Did you want to have lunch today at noon? There was a lot of noise last night at midnight. | TIME of DAY I wake up early in the morning. We usually go for a walk in the evening. Note: in the morning, in the afternoon, in the evening, but at night. Months - I was born in September. Judy was married in June. Years - Were you born in 1991? Columbus discovered America in 1492. Seasons - I go on holidays in the summer. In the winter I have to shovel the snow. | TIME Days of the week - I don't work on the weekends. He was born on the 23rd of June. They always exercise on Fridays. Special Days - They love to go out on New Year's Eve. Let's get together on Christmas Day. |