新概念2-73：

When he woke up next morning, he discovered that the boat had, in the meantime, travelled to Calais. No one noticed the boy as he crept off.

新概念2-75：

Early next morning, she heard planes passing overhead and wondered how she could send a signal. Then she had an idea.

新概念2-33：

Early next morning, she saw a light ahead. She knew she was near the shore because the light was high up on the cliffs.

语法书上说，next + 例如week, year, afternoon...等表示从现在开始的一般将来时；如果是The next + ...大部分表示从过去的某时开始的...也可能是从将来某时开始的...

那么我的疑问是：上面3句都来自新概念，为什么不是When he woke up "THE" next morning, "THE" Early next morning, she heard planes..., "THE "Early next morning, she saw a light..呢？

为什么上面3句都没有定冠词THE呢？