前面详解了时间介词，这里来讲地点介词。
on in at是滥用最多的三个介词，首先好好区分。
at在一个小地方，位置当做一个点，相对具体
at the corner
at the bus stop
at the market
at the bookshop
at Cambridge
at HKU
at home
at the door
at the end of the road
at the entrance
at the crossroads
at the office
at Paris
at the foot of the hill
at 9 sasson road
at work
at reception
at class
at the desk
in在一个大地方，位置在一个空间的里面
in London
in England, at London
in a big city
in HK
in a car
in a boat
in a lift
in the newspaper
in a book
in a picture
in the sky
in the bed
in the bedroom
in the forest
in the middle
in the world
in Lesson 5, on Page 2
on把位置当做一个平面
on the cover of the book
on this menu
on my foot
on the wall
on the 7th floor
on a bus
on a train
on a plane
on a ship
on a bicycle
on a horse
on the radio
on television
on the left
on the way
on the table
on the river
by在位置附近
by the fire
by the seaside
by the river
by the nearest road
其他
near
under
over
below
above
around
through
among
between
behind
in front of
along
across
up
down
opposite
onto
off
into
out of
past
next to
by
beside
against
from to
towards
总结
强调某个具体的点就用at【可以相对】
强调在某个空间之内用in【可以相对】
强调在某个平面的上面用on
固定搭配
at home
at work
at class
in the newspaper
in a book
in a picture
in the sky
in Lesson 5
on the radio
on TV
on the left
on the river
固定搭配
at once
at last
at the same time
at first
not at all
at the end + 地点
one by one
by the way
in English
in yellow
in front of
in the end + 时间
in time 即时
think of
of course
because of
on duty
on time 准时