判断语气：

1. Knowledge is power. 2. One is never too old to learn. 3How bright the moon is tonight! 4. Open the window, please. 5. I wish that he had followed my advice. 6.The teacher suggested that we should read aloud. 7. If I have time tomorrow, I will call you. 8. If I were you, I would not say that.

（陈述）

（祈使）

（虚拟）

（陈述）

（陈述）

（虚拟）

（虚拟）

虚拟条件句

真实条件句