Talk about the function of expression

1. Examples make the article more specific, convincing and objective.

2. Contrast refers to comparing some abstract or unfamiliar things with concrete or familiar things, so that readers can get a concrete and vivid impression through comparison.

3. Defining the essential features of a concept in concise language is called definition. Definition can accurately reveal the essence of things and is a common method in scientific and technological discussion.

4. Drawing charts In order to make complex things clear, you can also use charts to make up for the lack of simple words and explain some things more directly and concretely.

5. Make an interpretation. From one side, make some explanations for a certain feature of things. This method is called hermeneutics.

6. Metaphor uses the similarity between two different things to compare, thus highlighting the characteristics of things and enhancing the vividness and vividness of explanation. This is called metaphor.

The interpretation method of metaphor in explanatory text is consistent with that in rhetoric. The difference is that there are similes, metaphors and metaphors in figurative rhetoric, while similes and metaphors are mostly used for description, while metaphors are inappropriate.

7. Imitation In order to make the explained object more vivid and concrete, we can imitate the appearance, which is called imitation. (and description should be distinguished. Although the same, but the style is different. )

8. Citation In order to make the explanation more substantial and specific, you can cite materials to explain. The quoted materials range from classic works, famous sayings, formulas and rules, allusions and proverbs.

9. Classification divides the objects to be explained into different categories according to certain standards and explains them one by one. This method of explanation is called classification.

10. In order to make the things to be explained concrete, you can also use the method of column data to make readers understand. It should be noted that the quoted figures must be accurate, and inaccurate figures must never be used. Even the estimated figures should have reliable basis and try to be approximate.