Here is an explanation of how plural forms are expressed in Chinese:

1. Using Numbers or Quantifiers: Plurality is often indicated by adding a number or a quantifier before the noun. For example:

   • 一个苹果 (yī gè píngguǒ) - one apple (singular)

   • 两个苹果 (liǎng gè píngguǒ) - two apples (plural)

   • 几个苹果 (jǐ gè píngguǒ) - a few apples (plural)

2. Using "们" (men): The suffix "们" is added to pronouns and some nouns to indicate plurality. This is typically used for people or animals.

   • 我 (wǒ) - I (singular) → 我们 (wǒmen) - we (plural)

   • 你 (nǐ) - you (singular) → 你们 (nǐmen) - you (plural)

   • 他 (tā) - he (singular) → 他们 (tāmen) - they (plural)

   • 孩子 (háizi) - child (singular) → 孩子们 (háizimen) - children (plural)

3. Context: In many cases, the context helps to determine whether a noun is singular or plural without any explicit marker.

   • 苹果很好吃 (píngguǒ hěn hǎochī) - Apples are delicious. (The context implies whether it is singular or plural.)

4. Reduplication: Some nouns are duplicated to indicate plurality or generalization.

   • 天天 (tiāntiān) - every day

   • 人人 (rénrén) - everyone