How should the letter be structured?-CEFR

Each type of letter has a set format, whether they are official or casual. An effective letter should include:

• (Dear Jane, Dear Mr. Aftaan, Dear Sir/Madam, etc.) is an acceptable salutation.
• An introduction that states your purpose for writing in straightforward terms.
• a substantial body where the topic is developed. Create a new paragraph to start with each significant idea.
• a conclusion paragraph in which you restate the thesis or provide a suggestion for action.
• A suitable conclusion might be "Yours/Best wishes, + first name, + genuine, + loyal, + complete name."

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Style

The style is the primary distinction between official and casual letters.

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The following are traits of formal letter writing style:

• the salutation (Dear Mrs Jackson, Dear Sir,)
• usage of the passive voice a lot
• formal vocabulary (complex sentences, non-colloquial English)
• No shortened forms
• The closing (Yours truly, sincerely,)
• The following are traits of casual letter writing:
• the salutation (Dear Ali, Dear Jacob)
• informal terminology and writing (idioms, colloquial English)
• Forms shortened and pronouns removed
• The final line (Yours, Love, Best Regards, Zaid)

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NOTE:

• Formal letters contain two addresses—yours and the recipient's—whereas informal (friendly) letters have just one, yours.
• In polite correspondence, the first name is followed by the words Dear and Love/Yours/Best wishes.
• Dear Sir/Madam and Yours truly plus the recipient's full name finish formal letters.
• Greetings, Mr./Mrs. + last name, followed by Yours truly + complete name.
• For a semi-formal letter, use Dear Mr./Mrs. + surname at the start and Best wishes/Yours + first name or full name at the conclusion.

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