prep.

1. 在……地點
   They were already waiting at the gate when I got there.

   當我到達那裡時，他們已等候在門口了。

2. 在……時刻
   Jane will meet her boy friend at Christmas.

   珍將在耶誕節和她男友見面。

3. 向，朝，對著
   Don't shout at me.

   別對我叫喊。

4. 在……方面
   He is an expert at troubleshooting.

   他是位排解爭端的能手。

5. 因為，由於
   I woke at the sound of the bell.

   隨著鈴響，我醒了。

6. 從事於，忙於
   He is working hard at this thesis.

   他正在努力地撰寫論文。

7. 以（某種價格，速度等）
   They sold the cloth at a dollar a yard.

   他們以每碼一元的價格出售這種布。

prep.

1. expressing location or arrival in a particular place or position.
2. expressing the time when an event takes place.
3. expressing attendance of an educational institution or a workplace.
4. denoting a particular point or segment on a scale.
   ▸referring to someone's age.
5. expressing a particular state or condition.
   ▸expressing a relationship between an individual and a skill.
6. expressing the object or target of a look, shot, action, or plan.
   ▸expressing an incomplete or attempted action.
7. expressing the means by which something is done.

n.