early

1.early in the morning等表达方式有时被用作名词。例如：Early in the morning is a good time for a walk.

2.下面两句意思相同：

• They arrived here early in the morning.
• They arrived here in the early morning.

下面两句也意思相同：

• Early next morning we started together.
• Next morning early we started together.

3.as early as five o'clock和as early as 1632里不该在five o'clock前面加上at或在1632前面加上in。

4.I was told that he had left the city two days earlier里的earlier作before解。