- In general, we use in for anything inside an enclosed space.
- For example, in a building/house/office/shop, in a country, in a city/town/village, in a car, in a pocket, in the sky, in the sea, in a book/magazine/newspaper, in a box, in a photo, in bed, etc.
All the floors in her house are made of wood.
I have a friend waiting for me in the lobby.
This car was made in Japan.
Was it rainy in London?
It’s in my jacket pocket.
- Also, use in when referring to things placed in water.
There are a lot of fish in this lake.
She’s in the bath.
She watched the children swimming in the pool.
preposition of place ‘at’