过去式和过去分词都是learned，例如：
1.We only learned who the new teacher was a few days ago.
我们几天前才得知新教师是谁。
3.I soon learned not to ask too many questions.
我很快就意识到不能问太多的问题。
过去式和过去分词都是learned，例如：
1.We only learned who the new teacher was a few days ago.
我们几天前才得知新教师是谁。
3.I soon learned not to ask too many questions.
我很快就意识到不能问太多的问题。
