此文因果关系有两个层面。第一,物与物的因果关系:“河水清澈见底”与“院后有一片树林”互为因果。第二,物与人的因果关系:院后有这片树林,还得感谢我爷爷呢“。为此,彰显”人在同自然和谐相处中的主导作用“。倒数第四自然段中的”意想不到的是“应该删去,以揭示”改革决策符合群众意愿“。此文可变格用于以”和谐“为话题的作文。 There are two aspects of causality in this article. First, the causal relationship between things and things: ”Clear water bottomed out“ and ”after the hospital there is a forest“ are mutual cause and effect. Second, the causal relationship between things and people: After the hospital there are these trees, but also have to thank my grandfather ”. To this end, highlight “human beings in harmony with the natural leading role in harmony. ”. The “unexpected is” should be deleted to reveal “reform decision-making is in line with the wishes of the masses ”. This text can be used to essay the topic of “harmony”.