an

冠词

1. 1

   一、一个用于母音开头的字前

   She bought an umbrella before the storm arrived.

   暴风雨来临前，她买了一把雨伞。

2. 2

   每、每一

   The train travels at eighty kilometers an hour.

   这列火车以时速八十公里行驶。

3. 3

   任一、凡是泛指同类事物

   An elephant never forgets a kind gesture.

   大象从不会忘记别人的善意。

4. 4

   某、某个

   An old friend called me out of the blue yesterday.

   昨天有个老朋友突然打电话给我。