In my English grammar exercise book (English Grammar in Use), I saw the following correction exercise.
I'm going to buy a new pyjama.
The answer was "I'm going to buy some new pyjamas".
In my thought, it is possible to say " I'm going to buy new pyjamas". But I found that in similar situations people frequently use "some" as above like this:
I need some scissors.
I have seen some good films recently.
Would you let me know when I should use some? In the above three examples, is it possible to omit 'some'?
NOT A TEACHER
(1) By any chance, are you able to get a copy of Mr. Michael Swan's Practical
English Usage? He discusses this matter in detail.
(2) Mr. Swan says that sometimes there is no great difference:
We need (some) cheese. / I didn't buy (any) eggs.
(3) In other cases, there is a difference:
We've planted some roses. (The speaker doesn't say how many)
I like roses . (No idea of number)
Would you like some more milk? (Indefinite amount -- as much as the listener wants.)
We need milk, sugar, and eggs. (The speaker is thinking of the things that are needed, not of the amounts.)
Regarding your "scissors" and "good films" sentences, let's wait for a teacher to
answer, for I do not want to give you any wrong answers.