In these places patients can go to be near nature.

这句话是从2019全国卷I七选五选来的，不明白其中的 be 是什么用法：

In these places patients can go to be near nature during their recovery.

文章作者显然把to be near future用作go的目的状语。但我觉得这样安排句子逻辑有些问题。既然已经在这些地方了，can go就被架空了。改为下句会更好：

People can go to these places to be near nature during their recovery.

曹荣禄 -

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刘永科 - 教育出版集团英语总顾问 & 英语系列图书主编 1秒前

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In these places patients can go to be near nature during their recovery.

to be near nature，不定式作目的状语。等于：to stay close to nature，“靠近大自然”。

go to do sth. 是英语中常见的表达。汉语也是如此，我们常说“去做某事”。