The prices of building material/s have gone up recently.
The writer is collecting material/s for the new book.
Material/s is both countable and uncountable, but how should I know when it's used as a countable and uncountable noun? Thanks.
I think you're really getting into a problem here, QD, if only because of the use of the word "material" with "genetic". I've not heard the term "genetic material/s" used and wouldn't know what you were trying to convey whether you made it countable or not. "Material" just isn't the right word in this context.Thanks, my friends, for your reasonable comments.
But I still have some doubts: Genetic material/s store/s genetic information for a human being or other living organism.
Which form should I use here? Thanks.
I will here none of it!
I would go with "material" for this one because of the singular "reading". There is only one type of "material" involved in this sentence. The fact that three books are to be read doesn't change the fact that the books are the "material" which the students must have. If I go into a room filled with 50 books and choose three of them, I'm unlikely to say "I've chosen my reading materials"Thanks, FH.
I happen to run across this one: Students may pick three books from a list of fifty as their outside reading material/s.
What about this one?
I'm not testing you; I just want to get the real hang of it. Sorry!