用英语双数怎么说

In English, the plural form of a noun is usually indicated by adding an "s" to the end of the singular form of the noun. For example, "book" becomes "books," "dog" becomes "dogs," and so on. However, there are some exceptions to this rule. For example, nouns ending in "s," "x," "z," "sh," or "ch" typically form the plural by adding "es" (e.g. "bus" becomes "buses," "box" becomes "boxes," etc.).