Africa，名词词性，意为非洲，例如：

1.Living in Africa was very different from home and quite an experience.生活在非洲完全不同于在家里，那真是一次不同寻常的经历。

2.Many years later I returned to Africa but that's another story.多年以后我又重返非洲，不过这是后话了。

3.South America separated from Africa 200 million years ago.2亿年前南美洲和非洲分离。

Africa,名词，意为非洲，单词末尾加n后名词意为非洲人，形容词意为非洲（人）的，可数名词