at+地點(diǎn)/空間/平面

例如:in London/ in the kitchen/ in the field

on 上面，某個(gè)平面上，或者與一個(gè)面有所接觸過(guò)

on the wall/ on the roof

at+事件/某個(gè)具體的點(diǎn)的附近

at the bus station/ at the door/ at the party

特殊用法:

1:長(zhǎng)在樹(shù)上用on the tree,外來(lái)物在樹(shù)上用in the tree

there are some birds in the tree

there are many apples on the tree

2:除car/ taxi外，其他交通工具用on

in a car/ in a taxi

on a bus/ on a ship