Cách sử dụng
A comma is a punctuation mark that is used to separate different parts of a sentence. It can help make sentences easier to read and understand. For example, in the sentence "I went to the store, and I bought some food," the comma separates the two independent clauses. Another example is when listing items in a sentence, such as "I need to buy eggs, milk, and bread." In this case, the comma separates each item in the list. It's important to use commas correctly in writing to avoid confusion or ambiguity.