直接引语变间接引语的时态问题书上说表示引述的状态和情况到现在仍是事实时,也经常用一般现在时.书上有句话I can speak three languages变为She said she could speak three languages.我觉得can不应该变啊.再比如She said:"I am a teacher."应该怎么变

直接引语变间接引语的时态问题
书上说表示引述的状态和情况到现在仍是事实时,也经常用一般现在时.书上有句话I can speak three languages变为She said she could speak three languages.我觉得can不应该变啊.再比如She said:"I am a teacher."应该怎么变