1. Clothes are plural nouns, not singular. It can't be preceded by indefinite articles or numerals, but it can be modified by words such as some, these, those, many and few. For example:

Those clothes/a few clothes/many clothes

Error: One piece of cloth/two pieces of cloth/three pieces of cloth

Dress stands for "clothes" and has two uses:

(1) is used as a countable noun, which mainly refers to women's dresses or dresses, and also refers to children's clothes, but not to men's clothes. For example:

All her clothes are made by herself.

She is wearing a beautiful dress. She is wearing a beautiful dress.

(2) Used as an uncountable noun, indicating the general name of "clothes" (regardless of gender). For example:

He doesn't care much about clothes. He doesn't pay much attention to clothes

Note: dress as an uncountable noun is not common in modern English. Mainly refers to some special kinds of clothes (such as dresses, etc.). ). For example:

Evening dress, evening dress, full dress

national costume