Dialects are not always as formal as standard languages. Dialects and standard languages have their own unique functions and expression effects in different contexts and occasions. The following are some views on the formality of dialects and standard languages： 1. **Context and occasion**: Standard language is usually used in formal occasions, such as academic conferences, official documents, news reports, etc. Dialects are more common in daily exchanges, family dialogues, and local cultural activities. Therefore, in formal occasions, the standard language is more decent, but in informal occasions, dialects are more expressive of intimacy and local characteristics. 2. **Cultural identity**: Dialects often carry local culture and history, and the use of dialects can enhance a sense of cultural identity and belonging. In some cases, the use of dialects can even express the emotions and attitudes of the speaker better than the use of standard languages. 3. **Expression effect**: There are many unique vocabulary and expression methods in dialects, and these may not be found in standard languages. Therefore, in some cases, the use of dialects can more accurately and vividly express the meaning of the speaker. 4. **Social status**: Although standard language is more common in formal settings, dialects may be regarded as a symbol of status and status in certain social groups. For example, in some places, using the local dialect may be regarded as more grounded and people-friendly. 5. **Linguistic diversity**: The existence of dialects enriches the diversity of language and makes language expression more colorful. Although the standard language is standardized and unified, dialects add more color and layers to the language. In summary, dialects and standard languages have their own applicable occasions and expression effects, and it cannot be simply said that dialects are not as formal as standard languages. In actual use, the appropriate language form should be selected according to the specific context and purpose.