介词in的用法
1.表地点、场所、部位等
In Europe / sit in the corner of the room / be wounded in the leg / in the dark (shade, open) /in one’s hand
2在期间、在过程中、过……多久
In the nighttime / in the eighteenth century / early in the spring / in one’s absence / I will be back in five years
3.（表示领域、范围）在……之内；在……方面；关于
A ship is in sight.
Be equal in distance
A book in British literature
Guangdong lies in the south of China.
In history / in style / in function / in character
4．（表状态，情况）处于…….之中
The joke is in poor state.
A book in the original
Be in great excitement
5.（表示职业，活动）从事于
Be in hospital / be in school / be in prison /jail
6.（表示形式、方式、排列）以；按照；符合于；
Stand in a circle / speak in a whisper
They came in threes and fours.
Arrange in alphabetic order
In a good manner / way
7.（表示表达方式、手段、和原材料）用；以
A letter written in English / words underlined in red ink Broadcast in six languages to the world
Pay in cash
A statue in bronze
8.（表示服饰等）穿戴；戴着；带着
A young man in a decent suit
A girl in pigtails 梳辫子的姑娘
A man in glasses
Be in irons
9.（表数量，程度，比例）以，按；从……中
In large numbers
The tourists arrived in thousands.
One in ten
10.(表示方向)向；朝
Flee in all directions。