Final answer:
Spoken contractions like y'all, ain't, don't, can't, it's, and others are a part of informal English and should be avoided in formal or academic writing.
Step-by-step explanation:
Spoken contractions, such as y'all, ain't, don't, can't, it's, and others, are a part of informal English. They are commonly used in everyday conversation and informal writing, but should be avoided in formal or academic writing. Contractions help to make speech more efficient and informal, but their usage may vary based on regional and cultural factors.