The change of living environment describes the changes of public facilities such as houses, streets and parks in my hometown, as well as the changes of decoration and layout of family houses. The change of traffic conditions describes the improvement of traffic conditions in hometown, such as widening roads, reducing traffic congestion and increasing public transportation.

The change of people's lifestyle describes the change of people's lifestyle in their hometown, such as shopping, entertainment and leisure. The improvement of education and medical conditions describes the improvement of education and medical conditions in hometown, such as the renewal of school and hospital facilities and the improvement of the quality of education and medical services.

The popularization of science and technology application describes the popularization of science and technology application in hometown, such as the application of new technologies such as smart home, intelligent transportation and internet medical care.

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Composition is a narrative method that expresses a theme through words through human thinking and language organization. Composition is divided into primary school composition, middle school composition and college composition (thesis). Composition genres include: narrative, expository, practical and argumentative.

Narrative can generally be divided into several types, such as remembering people, narrating, writing scenery and chanting things. Remember people, to show the thoughts, feelings and personality of the characters; Narrative, writing the meaning of events, these meanings can be political and ideological, can also express a certain philosophy, or a certain interest; Write about scenery.

It is necessary to express some personal feelings or profound feelings through the description of the scenery; Chanting about things, or revealing some pleasure of life in the world, or expressing meaning with things, shows one's feelings for some people and phenomena in society.

So we always write narratives for a certain purpose and always express some thoughts and feelings, which is actually what we usually call "the theme of the article". The theme is the soul of the article, which runs through the article like a red line.

Narrative without a clear theme can only be a running account, so to write a good narrative, we must be clear about "why", that is, the theme should be clear. We should pay attention to three points when defining the theme: First, we should be positive, that is, the determined theme, thoughts and feelings must be healthy and meaningful.