Someone could help about the plural of Bread? way it isnt not breads?
In English, "bread" is not countable, so it has no plural. If you want to count bread, you can loaves, or slices, or pieces, etc.
"you can <em>say</em> loaves...."
Sorry about the typo ;)
It is one of many "mass nouns" or "uncountable nouns." I think the idea is that they are just some kind of <em>stuff, </em>material, rather than being individual <em>things</em>. You turn them into <em>things</em> by using a phrase, such as "a loaf of" or "a piece of."
Here are some other examples:
That is a very big flock of sheep. There a hundred sheep in the flock: fifty ewes and fifty rams.
The water in the world's oceans has a total volume 1.338 billion cubic kilometers. I wonder how many drops of water that is?
As Dan says, there are indeed many non-countable nouns, as well as nouns that may be countable or not
-- How much pizza did you eat?
-- I had three slices (of pizza) / i had two whole pizzas = two pizza pies
Abstract nouns can be non-countable as well:
-- Some advice.
To count them, we can use piece "a piece of advice" or a countable synonym "a tip."
"Sheep" is always countable, it's just that the plural has the same spelling and pronunciation as the singular....