As far as I observed people would use when
instead, but still, I wonder if the sentences below are grammatically correct.
- How many days later will you come (back)?
- After how many days will you be here (again)?
- How many days from now will you be there?
- How many days later from now will you go there?
- How many days later from then will you go there? (future of future)
- After how many days from now will you go there?
- After how many days from then will you go there? (future of future)
So, which of the sentences above are grammatically correct? Also what would be the correct structure for the incorrect (or poorly worded) ones? Thank you.