读音不相同：[sʌn] ， /penz/The sun fell below the sea level and then disappeared.太阳落到了海平面以下，然后消失了。

Three suns passed, I still haven't heard from him.三天过去了，我还是没有收到他的音讯。The sun rises in the east.太阳从东方升起。The pens sell for just 50p each.这些钢笔每支只卖50便士。Pens are kept in the middle drawer.钢笔在中间那个抽屉里。