UNCOUNTABLE NOUNS

Uncountable nouns are those you cannot say "one, two, three..."

Examples: water, air, rice, salt, plastic, money, music, tennis, luggage, baggage, accomodation, equipment, information, soap, toothpaste, washing powder, washing-up liquid, polish, paper, sugar, spaghetti, butter, flour, soup, advice, knowledge, progress, research, work, cloth, leather, wool, wood, concrete, coal, oil, petrol, gas, weather, hair, news, furniture, patience, courage, determination, goodwill, charm, stamina, reliabilty, loyalty, energy, experience, commitment, talent, creativity, intelligence, training, behaviour, damage, permission, scenery. traffic...

We can use SOME to express quantity of water, air, rice, money, accomodation, news, etc...

How to make these nouns plural:

a glass of water,
a breath of fresh air,
a bowl of rice, sugar, flour, spaghetti
a pinch of salt,
a piece of music,
a game of tennis.
three pieces of luggage (baggage),
pieces of equipment,
pieces (bits) of information,
a bar of soap,
a tube of toothpaste,
a box of washing powder,
a bottle of (liquid),
a can of polish,
pieces of paper,
a bar of butter,
a dish of soup,
a piece of advice,
a piece of cheese,
a can of oil,
a cup of coffee,
a bar of chocolate
a loaf of bread,
pieces of furniture
a slice of cake, toast, bread, meat, cheese
cartons of milk
a bunch of flowers
a pair of shoes, gloves, pants (trousers), socks, scissors

How many pieces of luggage have you got with you?
I heard a really useful bit of information yesterday.
We have certainly had a good spell (period, season) of summer weather this year.
Did you hear that rumble (noise) of thunder?
Yes, I did. It came almost immediately after the flash of lightning.
I heard a sharp clap (noise) of thunder, then a few rumbles in the distance.
A sudden gust of wind turned my umbrella inside out.
There was a sudden shower of rain this morning.
Did you feel a spot of rain?

Look at the ladybird on that blade of grass!
What happened? Look at that cloud of smoke hanging over the town!
She blew little puffs of smoke out of her cigarette straight into my face.
Put another lump of coal on the fire, please. (lump can also be used with sugar)

I had an amazing stroke of luck this morning.
I´ve never seen him do a stroke of work. (only in negative sentences)
I´ve never seen him in such a fit of temper before.
The donkey is the basic means of transport on the island.
Tights must be the most useful article/ item of clothing ever invented.
There was an interesting item of news about France on TV last night.

The phrase a state of can serve to make uncountable nown singular. The nouns used with state are usually abstract and include chaos, emergency, tension, confusion, health, uncertainty, poverty, agitation, etc...

Source: English Vocabulary in Use - Cambridge