Some nouns in English are uncountable nouns.
英语中有些单词是不可数名词。

We do not use uncountable nouns in the plural and we do not use them with the indefinite article, a/an.
不可数名词没有复数形式,我们也不用不定冠词a/an修饰他们。

We ate a lot of foods > We ate a lot of food

We bought some new furnitures > We bought some new furniture.

That’s a useful information > That’s useful information

We can use some quantifiers with uncountable nouns:
我们可以用某些量词修饰不可数名词:

He gave me some useful advice.

They gave us a lot of information.

Uncountable nouns often refer to:
不可数名词有一下类别:

Substances: food; water; wine; salt; bread; iron

Human feelings or qualities: anger; cruelty; happiness; honesty; pride;

Activities: help; sleep; travel; work

Abstract ideas: beauty; death; fun; life

Common uncountable nouns
常见的不可数名词

There are some common nouns in English, like accommodation, which are uncountable nouns even though they have plurals in other languages:
英语中有许多名词,如accommodation,是不可数名词,但它在其他语言中有复数形式:

Let me give you some advice.

How much luggage have you got?

If we want to make these things countable, we use expressions like:
如果想让这些词变得可数,可以用下列短语:

Let me give you a piece of advice.

That’s a useful piece of equipment.

We bought a few bits of furniture for the new apartment.

She had six separate items of luggage.

but we do not use accommodation, money and traffic in this way.