介词in的用法

in
介词 prep. 

1.在...里,在...上
The two brothers study in the same class. 
两兄弟在同一个班里上课。 
The telephone is in the little study on the ground floor. 
电话在一楼的小书房内。 
2.在...之内;在...方面
He is lacking in courage. 
他缺乏勇气。 
3.从事于;参加着
She is in business. 
她做生意。 
4.穿着,戴着
He is dressed in black. 
他穿黑衣服。 
5.朝,向
She hurried away in the opposite direction. 
她朝相反的方向匆匆离去。 
6.(表示手段、方法、材料)用,以
They paid in cash. 
他们用现金支付。 
7.在...期间;在...以后
He'll come back in a week. 
他将于一周之后回来。 
I haven't met her in a long time. 
我好长时间没有遇见她了。 
8.处在...中
The room was in disorder. 
房间里乱七八糟。 
9.(表示数量、程度、比例)按,以;在...中
One child in twenty has this disease. 
二十个小孩中有一个患有这种疾病。 
10.在...身上,在...上
In him I see a future leader. 
我在他身上看到了一个未来的领袖人物。 
11.(表示过程)在...当儿;在...过程中
The work is in progress. 
这工作正在进行中。 
12.(表示动作的方向和结果)进入到...中;成,为
He pushed a button and set the machine in motion. 
他按下按钮开动了机器。