题目内容：

英语宾语从句在什么状况下不改变时态?

优质解答

1 表示永恒真理或转述假设语气的直接引句变间接引句时不改变时态.Father said,"Light travels much faster than sound."父亲说,"光比声音传播快得多."（间）Father said that light travels much faster than sound....