Don't use in, on or at before next, last, this, every, today, tomorrow or yesterday: See you next Monday. I called her last week. The word already says when. Home also takes no preposition after verbs of movement: go home, get home.
Could we meet next Monday?
Next already does the job of the preposition, so on disappears.
| next / last | next week, last year, next Monday, last night |
|---|---|
| this / that | this morning, this weekend, that day |
| every | every day, every summer, every Monday |
| today, tomorrow, yesterday | tomorrow morning, yesterday afternoon |
| home (after go, come, get) | go home, get home at 6. But: I'm at home. |
We're meeting next Friday.
Next and last point to the time themselves, so no on, in or at.
I go swimming every Saturday.
This morning, this year, every day, every summer: no preposition.
I'll see you tomorrow morning.
Also when a part of the day follows: tomorrow morning, yesterday evening.
I went home early.
After go, come, get and arrive, home takes no preposition. When you're there, it's at home.
Common expressions worth learning as they are.
We're flying to Rome _____.
Time and place, side by side.
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No. In standard English it's next Monday, without on.
Use at home for where you are (I'm at home). Use home without a preposition after verbs of movement (I'm going home, I got home late).