1, letterhead: at the beginning of the letter, write personal information such as class, student number and name to show standardization and formality.
2. Address: At the beginning of the letter, write the full name or respectful name of the recipient to show respect and courtesy.
3. body: this is the main part of the letter, expressing your opinions, ideas or requirements in concise and clear language.
4. Ending: At the end of the letter, express your thanks and respect with appropriate honorifics.