***** NOT A TEACHER *****
Hello, Screen:
When I saw your question yesterday, I was really excited because that “not that” phrase confuses me, so I was waiting for someone to answer, but since no one has so far, may I share a few thoughts? (These are not “answers.”)
- Congratulations! I believe that you have correctly identified the complete sentence.
a. On the Web, you will find many examples. Here are only two:
i. It is not that I care, but I was wondering why …" (said by someone in the Congress [parliament] of the United States).
ii. It is not, that I love you less
Than when before your feet I lay,
But to prevent the sad increase
Of hopeless love, I keep away.
(That beautiful poem was written hundreds of years ago by someone named Waller.) (By the way, one expert said that the comma after the word “not” IS correct because you should pause after that word. Nowadays, however, people do not seem to use the comma. And they do not pause, either, nowadays. If they DID pause, they might understand the meaning more clearly.)
I found your parsing of the words very interesting:
It = subject. (I agree with you. It is the formal subject. Some experts feel that “it” means nothing.)
is = verb. (I feel that “is” in this kind of sentence is not a linking verb. It does not link to anything. I feel that it is a full verb. It means something like “to exist.”)
not = adverb. (I agree with you.)
that I mind = (I feel that it is a noun clause. It is the real subject of the sentence. The formal subject “it” is only a substitute for the real subject that has been moved to the end of the sentence.)
that = I feel that it cannot be a relative pronoun. “I like the book that you have” has a relative pronoun because “that” relates (“relative”) to the noun “book.” But “that” in your sentence does not “relate” to any word. If I understand my books correctly, its job is just to introduce the noun clause “I mind.” Most books seem content to parse it as a conjunction.
I = subject of noun clause.
mind = verb of noun clause.
In researching this matter on the Web, I learned something that I had not known before: Some (some!) experts say that your sentence is a kind of CLEFT SENTENCE.
a. A cleft sentence emphasizes a part of a sentence. For example:
“Tom eats apples.”
i. It is TOM that eats apples. (Emphasizes “Tom.”)
ii. It is APPLES that Tom eats. (Emphasizes “apples.”)
b. Now which sentence emphasizes the negative more strongly?
i. I do not mind, but why didn’t you phone yesterday?
ii. It is NOT that I mind, but why didn’t you phone yesterday?
(I think that ii emphasizes the negative more strongly. What do you think?)
James
P.S. Please let me know if you disagree with any of my opinions.
Sources included: Wikipedia’s article on cleft sentences. / ELEMENTS OF ELOCUTION (published in the year 1799 by John Walker) in the “books” section of Google.