Rebekah
I'm confused about how to recognize a noun for singular/plural, countable/uncountable
I've seen a lot like 'citrus' 'dioxins', the words I do not know, and I have to decide singular/plural, countable/uncountable..
Can I say that
If countable --> you will see Noun + "s",
If uncountable --> NO "s", e.g.
if Noun + "s", use plural(at most of time)?
If not, refer to some hint(for example see whether the parallel structure uses plural verb or singular verb.)
This can be a surprisingly messy topic. By now, most of you have heard the "simple" technique for these situations: if you try actually counting something, you can usually figure out whether it's countable or non-countable.
For example:
- Cupcakes: "one cupcake, two cupcakes, three cupcakes..." --> makes sense, so it's countable
- Bread: "one bread, two breads, three breads..." --> you would never say "three breads", so the noun must be non-countable
The trouble is, there are a ton of nouns that normal people never try to count. For example, who has ever wondered if you can count dioxins? So what do you do about more "unusual" nouns that you never really think about?
Sadly, there's no perfect answer to that. One rule of thumb: if you KNOW that the noun is plural, then by definition, it has to be countable, right? Check out
this post for an example of this on a legendary official SC question.
Unfortunately, if an unfamiliar noun is singular, then you can't automatically know whether it's countable or non-countable. After all, "cupcake" is still a countable noun, even if it's singular.
And sure, most plural nouns end in "s" and most singular nouns do not, but there are tons of exceptions. For example, "news" and "octopus" are both singular nouns, even though they end in "s". "Mice" and "children" are plural nouns, but do not end in "s". And "
media" and "species" and "
starfish" can be either singular or plural.
Sorry, English is a mess, and there aren't any universal, exception-free rules for plurals.
But keep reading -- I have some good news about how often this stuff ACTUALLY causes trouble on the GMAT.
Rebekah
Oh, i've also seen waters, can i say that waters are countable in this circumstance??I know usually water should be referred as uncountable noun.
You don't want to go TOO far into obsessing over the properties of every strange noun in English. Other than
the dioxin question, we don't have many examples of official GMAT SC questions that test whether obscure nouns are countable or non-countable. So it's a waste of your time to worry about every single wacky noun in English -- and there are literally thousands of wacky nouns in English.
For whatever it's worth, "water" (like, the stuff we drink) is non-countable. But "waters" (as a plural noun) means "bodies of water" (rivers, ponds, lakes, etc.), and since it's plural, it's definitely countable.
Bottom line: when you encounter a situation with countable vs. non-countable nouns, try the basic "counting" technique first ("one bread, two breads, three breads...") to determine whether the noun is countable or non-countable. If that doesn't work, then you can assume that a noun is countable if it's clearly plural. And if THAT doesn't work... well, I can't identify any official GMAT questions that would still leave you stumped after using those two techniques. So don't worry too much about any exceptions that you encounter.
I hope this helps!