fml and infml

Formal or informal
People often speak of language as being correct or incorrect. It would be more accurate to refer to particular language structures as being formal or informal, appropriate or inappropriate for a specific context. In everyday conversation we do not have to follow the rules of grammar as carefully as we would in a formal address or a business letter. If we adhere too closely to formal rules of grammar in an informal situation, we can come across as being stuffy and unnatural. It is like wearing a tuxedo or a formal gown to an ordinary business meeting.
Formal English follow rules of grammar very strictly. Sentences tend to be longer and more complex. The vocabulary tends to be elevated, using big words and avoiding slang or vernacular. It avoids split infinitives and prepositions at the end of sentences .
Here are several structures where it is can be helpful to know the level of usage, formal or informal.
Predicate nominative or " It wasn't me".
Informal Language
In writing, there are three recognized levels of formality, each of which uses different vocabulary and sentence structure:
rmal language may make use of slang and colloquialisms, employing the
conventions of spoken language. However, it is too casual and loose to be acceptable for academic writing.
2.Medium language uses general language, falling in between informal and formal writing.
It is acceptable for academic writing.
3.Formal language uses a Latinate vocabulary and rhetorical devices to create literary-like
effects.
In choosing a level of formality, consider both your material and your readership. A serious, dignified subject for a knowledgeable audience requires formal language. In contrast, informal writing is appropriate for private letters, some business correspondence, popular journalism, and personal narratives. Academic writing, however, should range from
medium to formal language. The following three sentences attempt to highlight the three levels of formality.
Informal: Psychobabble is a bunch of crap that confuses people. Medium: Psychobabble is a jargonistic smoke screen that obscures the clarity of understanding it pretends to promote.
Formal: Psychobabble is a set of repetitive verbal formalities that obfuscates the lucidity of comprehension it feigns to advance.。