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all of the ... (specific) vs all ... (generic) — Murphy Unit 88

“of” + determiner + noun = specific | bare noun after determiner = generic

Form Meaning Use
all + bare noun generic / general claim proverb, abstract statement
all of + determiner + noun specific subset the particular one(s) just mentioned
Generic Specific
All money is dirty. (proverb) All of the money I gave you is gone. (specific sum)
All people die. (general truth) All of the people I invited came. (specific group)
Most students should study. (general) Most of the students in this class passed. (specific class)
Some people are tall. (general) Some of the people I know are tall. (specific)
Many books are heavy. (general) Many of the books on this shelf are heavy. (specific)

The “of” construction needs to pull a specific subset from a set. To specify which subset, English needs a determiner (the / my / this / that / these) before the noun:

  • all of the money (the specific money mentioned)
  • all of my money (the specific money belonging to me)
  • all of this money (this specific money)
  • all of it (pronoun — no article needed)

Without a determiner, “of + bare noun” sounds ungrammatical — like “I gave you of money” (missing “some/the”).

Cure-Dolly style: “of” is a specifier-puller. It needs a specific thing to pull from. “the” marks the thing as already known to both speaker and listener — exactly what “of” needs.

Determiner Generic Specific
all all money all of the money
most most students most of the students
some some people some of the people
many many books many of the books
few few people few of the people
half half the work / half of the work (both work)
any any student any of the students
each each book each of the books
either either answer either of the answers

Pronouns after “of” — no article needed

Section titled “Pronouns after “of” — no article needed”
With noun (need determiner) With pronoun (no article)
all of the money all of it
most of the students most of them
some of my friends some of us

Rule: when the “of” target is a pronoun (it, them, us, him, her), drop the article. Pronouns carry their own definiteness.

Half can drop “of” entirely. Both forms work:

  • half the work ✓
  • half of the work ✓
  • half of it ✓ (pronoun)
  • half work ✗ (missing article)

No other determiner drops “of” this naturally. All the work / all of the work both work too, but most the work is wrong (must be most of the work).

half + my/the + noun — no “of” before determiners

Section titled “half + my/the + noun — no “of” before determiners”

I had no appetite. I could only eat half my dinner. ✓ (✗ the half of my dinner · ✗ half of dinner)

all / both / half sit directly before a determiner — no “of”:

no of (determiner follows) of required
half my dinner · half the time half of it (pronoun)
all my friends · all the money most of the students
both my hands · both these books many of the books
  • ✗ the half of my dinner — doubled determiner (the + my) is impossible
  • ✗ half of dinner — bare noun, no determiner to pull from (see the of-puller rule above)

most is the odd one: it always needs of + determiner (most of my friends), never most my friends.

I had no appetite. I could only eat ___ .

Answer: half my dinner — half + possessive determiner, no of. The alternatives miss a determiner (half of dinner) or double it (the half of my dinner).

Indonesian semua uang (“all money”) doesn’t use a definite article. Translating word-for-word gives:

  • all money — sounds generic/proverbial
  • all of money — wrong (missing article)

English requires “the” (or another determiner) for the specific reading. So semua uang yang saya berikan (“all of the money I gave you”) = all of the money I gave you, not all of money I gave you.

A: Did you spend ___ I gave you? B: No, there’s some left.

Answer: all of the money. The noun “money” is specific (the money A gave B), so it needs “of the”.

Why not the others?

  • all money — generic, sounds proverbial
  • all of money — wrong, missing “the”
  • all of the money ✓

Raymond Murphy, English Grammar in Use (4th ed.), Unit 88 — some / some of, most / most of, etc. Ebot lesson 2026-08-29: “Did you spend ___ I gave you?” with options all money / all of money / all of the money. Correct: all of the money. User’s summary: “all noun = generic, all of (determiner) noun = specific.”