[Grammar] the usage of 'some'

[word5810]

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'? ;-)

 

[TheParser]

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.