GRAMMAR, PLAINLY.
ПРЕДЛОГИ → IN / ON / AT — МЕСТО · ПРАВИЛО 10

in / on / at — место

in — внутри пространства. on — на поверхности. at — в точке: адрес, место, событие.

ФОРМУЛА
in → on → at
INВНУТРИ ПРОСТРАНСТВА
in the kitchen · in a box · in Milan · in Italy
ONНА ПОВЕРХНОСТИ
on the table · on the wall · on the second floor
ATВ ТОЧКЕ
at the door · at the bus stop · at work · at a party
ТРИ КАРТИНКИ
in
The keys are in my bag.
внутри
on
The keys are on the table.
на поверхности
at
I'm at the door.
в точке
Транспорт: on the bus, on a train, on a plane — но in a car, in a taxi.
ГОРОДА И МЕСТА
города и страныin Milan · in Italy
точки повседневностиat home · at work · at school
этажи и стороныon the second floor · on the left
ХИТРЫЕ СЛУЧАИ
in bed
in the sky
on the internet
on TV
at a party
at the top
ЧАСТЫЕ ОШИБКИ
I'm in home.→ I'm at home.home — это точка
She is at the kitchen.→ She is in the kitchen.комнаты — внутри
It's in the second floor.→ It's on the second floor.этажи → on