这张沙发很舒服啊。

Zhè zhāng shāfā hěn shūfu a.

This sofa is so comfortable.

我的沙发太旧了。

Wǒ de shāfā tài jiù le.

My sofa is too old.

我一回家就躺在沙发上看电视。

Wǒ yì huíjiā jiù tǎng zài shāfā shang kàn diànshì.

As soon as I get home, I lie on the sofa and watch TV.