A semicolon is primarily used in the following situations:
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To show a pronounced pause, usually between independent clauses: This is the most common use of a semicolon. It connects two closely related independent clauses that are not joined by a conjunction (like "and" or "but"). For example: "I went to the beach; it was a beautiful day."
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To separate items in a complex list: Semicolons can also be used to separate items in a list when those items themselves contain commas, to avoid confusion. For example: "On our trip, we visited Paris, France; Rome, Italy; and Berlin, Germany."
The other options you mentioned are typically not uses for semicolons:
- Opening a formal letter usually involves a colon (e.g., "Dear Mr. Smith:").
- Showing a small break between independent and dependent clauses is generally done with a comma rather than a semicolon.
- Dialogue or quotations are typically indicated with quotation marks.
In summary, the correct uses of a semicolon are primarily to connect closely related independent clauses and to separate complex list items.