See what the weather tells us.

First, the structure content "Seeing the weather from the clouds" is an explanatory article introducing scientific knowledge. The first part (the beginning) has been talking about the morphological changes of clouds, explaining why we can know the weather by looking at clouds. The second part (section 2-6) is the main part of the text, which is about how to know the weather from the clouds. The third part (end) explains the significance of weather observation to industrial and agricultural production and the problems that should be paid attention to. Second, the language features are accurate and vivid, which is the characteristic of this expository article. Accuracy is the basic requirement of explanatory language. For example, at the end of the article, it is pointed out that "the weather changes are extremely complicated, so it is natural to know the weather by clouds", and at the same time, it is pointed out that "to accurately grasp the weather changes, it is necessary to rely on weather forecasts." These two sentences closely take care of the terms "often", "often", "sometimes", "general" and "possible" used in many places in the last article, and limit the matter of "knowing the weather from the clouds", which is also an accurate expression. This passage is closely related to the theme and the level is very clear. First of all, we can judge the weather by looking at the clouds. Because the relationship between clouds and weather changes is very close, clouds are the "signboard" of weather changes. In addition, how to understand the weather by observing clouds. This is the focus of the full text, written in detail. From high-level clouds to low-level clouds, from clouds symbolizing sunny weather to clouds bringing storms; From the relationship between cloud morphological characteristics and weather changes, to the relationship between cloud luster and weather changes. In the explanation, we start with the phenomenon, and then touch on the essence of things: the shape and luster of clouds are phenomena; The relationship between clouds and weather changes is the essence. There are many kinds of clouds, but the levels are not chaotic. There is a question of choosing the interpretation angle and arranging the interpretation order. In other words, what to say first, what to say again, and what to say later will help to understand the truth of "knowing the sky from the clouds" and finally make the finishing point and explain the purpose of knowing the sky from the clouds. Third, the accuracy of language shows that the most basic feature of text language is accuracy. This is determined by its own characteristics. Explanatory writing is a practical style with explanation as the main expression, which is used to introduce or explain the nature, characteristics, causes, functions, development process, internal laws and internal relations of things, with the aim of introducing knowledge to people. Therefore, the explanatory text must explain the characteristics or essence of things in accurate language in order to give people a correct and scientific understanding. At the end of the article "Knowing the weather from the clouds", it is pointed out that "the weather changes are extremely complicated, and there is a certain limit to knowing the weather from the clouds". At the same time, it is pointed out that "to accurately grasp the weather changes, we must rely on scientific weather forecast." These two sentences closely take care of the expressions of "often", "often", "sometimes", "ordinary" and "possible" used in many places in the last article, and limit the matter of "knowing the weather from the clouds" and play an accurate role in expression. It highlights the accuracy of explanatory language.

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