Determiners

khoshtip every noun needs a determiner.

No, not unless you're willing to accept the existence of a "null determiner".

khoshtipThe word part in the following sentence seems to be a noun, but without any determiner!

More than seems. Is. But you can say the same for many other nouns.

As it happens, you've come across

CalifJimYou will also see it with the determiner 'a'.

Yes, I had seen that version as well. I'm somewhat confused about "null determiner". What nouns get a determiner and what ones don't get please?

khoshtipWhat nouns get a determiner and what ones don't get please?

The only case in which a determiner is required is before a common countable singular noun.

CJ

CalifJima common countable singular noun

Sorry but it does not seem to be correct. For example, in sentence below:
The magazines you are to buy them are very useful.
The word magazines is not a singular noun but has gotten the definite article which is also a kind of determiners.

Check my sentence again. "required for X" does not mean "forbidden for non-X".

"magazines" is not singular, so a determiner is not required. You may say

I like to read magazines from time to time. A determiner is not required.

You may not say

I like to read magazine from time to time because 'magazine' is a common countable singular noun.

CalifJimYou may not sayI like to read magazine from time to time because 'magazine' is a common countable singular noun.

Thanks.
The only case remained is that common countable singular nouns.
I don't know how to recognize which countable singular nouns are common and which ones are not. Could you say some examples on uncommon cou

The term "common noun" contrasts with the term "proper noun". Essentially, not capitalized or capitalized.

common: boy, man, girl, woman, table, chair, house, city, map, computer, sky, tree, bird, ...
proper: Mr. Smith, Joseph, Chicago, Liz, Tom, Mrs. Jones, President Carter, Chairman Mao, ...

CJ

Thank you.