• I know that he is a good guy.
  我知道他是個好人。

• 附屬子句為「現在式」：

  I have heard that he works very hard.

  我聽說他工作很努力。
  

  附屬子句為「過去式」：

  I have heard that he worked very hard at the time.

  我聽說當時他工作很努力。

  
  附屬子句為「現在完成式」：

  I have heard that he has worked very hard recently.

  我聽說他最近工作很努力。

I said that he bought a car.

我說過他買了一輛車。

I said that he had bought a car.我說過他已經買了一輛車。

I said that he would buy a car.我說過他將會買一輛車。