30的英文怎么写

The English word for "30" is "thirty."

This is a straightforward translation of the Chinese number into the English language. In Chinese, we write numbers from one to ten as inpidual characters. For example, "一" represents "one," "二" represents "two," and so on. When we write out numbers above ten, we combine these characters to create the numeral.

So, when we want to write "30," we take the character for "三十" (which combines the characters for "three" and "ten"), and that's how we get "thirty."

I hope that helps! Let me know if you have any other questions.