怎么理解这句：It’s the cheapest kind of medicine there is on this earth and one of the best.

题目

怎么理解这句：It’s the cheapest kind of medicine there is on this earth and one of the best.
It’s the cheapest kind of medicine there is on this earth and one of the best.
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it's~~~~there~~~~有这种结构吗?如何划分句子成份?如何理解?

答案

其实and 并列的两个成分是the cheapest 和 the best.而on this earth作为状语可以放在句子的最后.
我们可以把句子省略的成分补上来,使句子变成:
It is the cheapest kind of medicine (that)there is and it is one of the best medicine (that)there is on this earth.
避免累赘和重复,可以进一步修改为:
It is the cheapest kind of medicine and one of the best there is on this earth.
It is ...there is和There is .意思一样,句形可以相互转换,只是后者比较常见,也用的比较普遍.所以我们最终可以把句子修改为:
There is the cheapest kind of medicine and one of the best on this earth.
翻译:这是地球上最便宜的一种药,也是最好的药之一.