learn的过去式和过去分词是什么
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...