When learning English, it is essential to work out when and how to use formal language.
Informal language is usually in a casual context,so it may use abbreviations, contractions, emojis, and slang. We use it in our everyday communication with friends and family.
A formal letter is a letter written to someone you do not know, therefore you should generally use more formal language than in letters you write to your family or friends, avoid phrasal verbs and involve more complex sentence structure
How to write an informal letter?
An informal letter is the letter we write to someone we’re close with, so it doesn’t have to be too formal. However, there still is a form we should follow when writing it. Here are some useful tips and phrases to help you write it.