::原文::
　　Australia is a unique country. It's the world's largest island, but it's also the
world's smallest continent. In fact, Australia is the only country that is also a
continent. It's about the size of the United States, but it has a population of only 16.5
million. If it sounds like an interesting place to visit, that's because it is.
 
如果您可以在10秒钟之内把下列每一个句子翻译成英文的话，那么可以说您已经基本掌握了本课的语法重点及实用句型。如果有困难的话，那您就需要重点复习一下相关的内容了。