1用英语怎么说

"How to say '1' in English?"

"In English, the number '1' is represented as 'one'. It is the first digit in the numerical system and is used to represent quantity or position in a sequence. For example, in a line-up of three people, the person standing in the first position would be numbered '1'. Additionally, in written form, '1' is often followed by a comma when used in a sentence."