姐姐用英文怎么说

"How do you say 'sister' in English?"

In English, "sister" is simply spelled as "sister." It doesn't have any variations in its spelling. The word refers to a female sibling, and it can be used to refer to one's own sister or the sister of someone else.

For example, "My sister is coming over for dinner tonight." Or, "I have a sister who lives in another country."

It's important to note that while the word "sister" is commonly used in both formal and informal contexts, there are other words that can be used depending on the specific situation or tone of the conversation. For instance, "big sister" or "little sister" can be used to refer to the age difference between siblings, while "elder sister" or "younger sister" can be used to indicate the seniority of the siblings.