Grammatical Distinctions.

Dear Friends & Users.

Today, I am going to discuss regarding Grammatical Distinctions in the following way:
1. Few, a few, the few, not a few.

(a) Few has a negative force and means almost none.
e.g I have few books (=Practically no books)

(b) A few mean some.
e.g I have a few books (=some at least).

(c) The few has a double meaning, one negative and the other positive.
e.g, I read the few books I had.
That is (i) The books I had were not many (Negative).
(ii) I read all the books I had (Positive).

(d) Not a few (=many) only more emphatic.
e.g, He gave me not a few(=many) stamps.

I specially request seniors for helping me out, if there is any error in explanation of Grammatical Distinctions.