介词 “at、on” 和 “in” 都可以用来表示人或事物所在的位置或地点。其中，哪个词表示 “在物体的表面上”？哪个指 “在立体空间内”？
Hello, I'm Sam and in this lesson we're going to look at the differences between at, in and on for location.
At can be used to talk about a single specific location. I'm at work. Or: I'm at the BBC right now.
On is used in relation to a surface. I'm sitting on a chair.
And in is used to talk about a three-dimensional space, usually with four walls. It's similar to 'inside'. I'm in a room.
So to help you remember these rules, try to think of a concert:
I'm at the front. The band is on the stage. And my friends are in the crowd.
And where are you right now?
用法总结
1 我们用 “at” 来表示 “在具体的位置”。
I'm at work.
I left my keys at home.
2 我们用 “on” 来表示 “在物体的表面上”。
I'm sitting on a chair.
The pen is on the desk.
3 我们用 “in” 来表示 “在立体空间内”，在这种情况下，“in” 与 “inside” 用法相似。
I'm in a room.
The cat is in a box.
4 想象在一场演出中，不同人员的所处方位，记忆 “at”、“on” 和 “in” 在表 “位置” 时的用法：
I'm at the front. The band is on the stage. And my friends are in the crowd.
Hello, I'm Sam and in this lesson we're going to look at the differences between at, in and on for location.
At can be used to talk about a single specific location. I'm at work. Or: I'm at the BBC right now.
On is used in relation to a surface. I'm sitting on a chair.
And in is used to talk about a three-dimensional space, usually with four walls. It's similar to 'inside'. I'm in a room.
So to help you remember these rules, try to think of a concert:
I'm at the front. The band is on the stage. And my friends are in the crowd.
And where are you right now?
用法总结
1 我们用 “at” 来表示 “在具体的位置”。
I'm at work.
I left my keys at home.
2 我们用 “on” 来表示 “在物体的表面上”。
I'm sitting on a chair.
The pen is on the desk.
3 我们用 “in” 来表示 “在立体空间内”，在这种情况下，“in” 与 “inside” 用法相似。
I'm in a room.
The cat is in a box.
4 想象在一场演出中，不同人员的所处方位，记忆 “at”、“on” 和 “in” 在表 “位置” 时的用法：
I'm at the front. The band is on the stage. And my friends are in the crowd.
