Quantifiers with 'Of': Specific Groups (some of, most of)
Grammar Rule in 30 Seconds
Use 'of' when picking a smaller part out of a specific, known group of things or people.
- Use 'of' before determiners like 'the', 'my', or 'these' (e.g., 'some of the apples').
- Never use 'of' directly before a general noun (e.g., say 'most people', not 'most of people').
- Always use object pronouns after 'of' (e.g., 'most of them', not 'most of they').
Overview
Words like 'some' show a number. Use 'of' for one group.
'Most students' means all students. 'Most of the students' means this group.
Learning this helps you speak well. It makes your English clear.
Use 'the' or 'my' for special things. 'Of' is a bridge.
You must use 'of'. This page helps you avoid mistakes.
How This Grammar Works
- Articles:
the - Possessives:
my,your,his,her,its,our,their - Demonstratives:
this,that,these,those - Pronouns which are inherently definite:
us,them,which,whom
Formation Pattern
Some of the documents need to be signed.
Many of my colleagues work remotely.
None of these solutions are acceptable.
The manager spoke to all of us.
I've seen those films, but I can't remember most of them.
The company has three new board members, two of whom are from outside the industry.
most of her ideas (C) / most of the time (U) | of is mandatory. |
some of these books (C) / some of the music (U) | of is mandatory. |
a lot of the work (U) / lots of the people (C) | of is mandatory. Used interchangeably in most informal contexts. |
All, Both, and Half
All (of) the students passed.
Both (of) the candidates were qualified.
Half (of) the audience left early.
When To Use It
- 1When the Noun Phrase Contains a Determiner
The software analyzes most of the data automatically.(The specific data we are working with)I'm still waiting for some of your team members to reply.(Not just any team members, but your specific ones)Neither of these approaches seems to work.(Referring to two specific approaches just discussed)
- 1When Referring to a Group with a Pronoun
There are twenty people in my department. Many of them have been here for over a decade.(themrefers back to the twenty people)(To a group of friends) I hope all of you can come to the party.(yourefers to the specific people being addressed)
- 1To Select from a Finite, Contextually Defined Set
- (Looking at a box of doughnuts)
Can I have one of those?(thoserefers to the specific doughnuts in the box) - (During a board game)
You need to move two of your pieces on the next turn.(The pieces belonging to you in the game)
- 1In Formal Relative Clauses
The project requires five senior engineers, all of whom must have experience with Python.He inherited a collection of rare stamps, some of which are worth thousands of dollars.
Common Mistakes
- 1Omitting
ofBefore a Definite Noun or Pronoun
- Incorrect:
*Most my coworkers take the train. - Correct:
Most of my coworkers take the train. - Why it's a mistake: The phrase
my coworkersis a definite group. The quantifiermostcannot directly modify it without the partitiveofto connect them grammatically.
- 1Incorrectly Adding
offor General Statements
- Incorrect:
*Some of drivers are reckless. - Correct:
Some drivers are reckless. - Why it's a mistake: The statement is about drivers in general, not a specific, defined group of drivers. Since
driversis an indefinite plural noun, noofis needed.
- 1Subject-Verb Agreement Errors
- With plural nouns:
Some of the reasons are valid.(reasonsis plural, so the verb is plural) - With uncountable nouns:
Some of the advice is helpful.(adviceis uncountable, so the verb is singular)
Each of the students has a laptop.One of the doors is open.Neither of the candidates was a good fit.
- 1The
Everyvs.Each ofTrap
- Incorrect:
*Every of the employees received a bonus. - Correct:
Every employee received a bonus.(Generalizing about all individuals) - Correct:
Each of the employees received a bonus.(Focusing on individuals within a specific group)
- 1Using a Subject Pronoun Instead of an Object Pronoun
- Incorrect:
*The CEO wants to meet with all of we. - Correct:
The CEO wants to meet with all of us.
Real Conversations
Observing this grammar in authentic contexts helps solidify your understanding. Notice how it is used to add specificity in casual, professional, and online communication.
1. At Work (Slack Channel)
> Sarah: `@channel Quick update on the Q3 client reports. I've finished reviewing them. Most of them look great, but a few of the newer accounts have some data missing. Could each of you please double-check your own files by EOD?
Analysis
the Q3 client reports (a specific set), then uses most of them and a few of the newer accounts to identify subsets. Each of you addresses the specific team members.*2. Making Plans (Texting)
> Alex: Hey are you free this weekend? Some of us are going to that new sci-fi movie.
> Ben: Maybe! what time? most of my saturday is free.
> Alex: 8pm. All of the tickets are booked online so we need to know who is in.
Analysis
Some of us refers to a specific portion of the friend group. Most of my Saturday treats the day as a specific whole. All of the tickets refers to the specific tickets for that showing.*3. Discussing a TV Series (Online Forum)
> UserA: Unpopular opinion, but I thought the last season was terrible. None of the new characters were interesting.
> UserB: I disagree! Many of the plot twists were genuinely surprising. And one of the final scenes was incredibly emotional.
Analysis
None of the new characters and many of the plot twists are subsets of that known content.*Quick FAQ
all the people instead of all of the people?When all is followed by the + noun, the of is optional (all the people / all of the people). Omitting of is slightly more common and informal. However, before a pronoun, of is mandatory: all of us, never *all us.
Both are technically correct, but the plural verb (are) is much more common in modern English and is recommended for most situations as it sounds more natural. In a highly formal academic paper or a grammar exam, some traditionalists might prefer the singular (is), but for communication, are is safer.
every of my friends?Every is a special kind of determiner that views a group as a collection of individuals and doesn't work with the partitive of. To speak about the individuals within a specific group, use each of my friends. To make a general statement about all friends, you could say every friend I have.
The verb agrees with the noun after of. If the noun is uncountable, the verb is singular (A lot of the water was wasted). If the noun is plural countable, the verb is plural (A lot of the documents were lost).
most people and most of the people?Yes, a crucial one. Most people is a general statement about people in the world (Most people have a smartphone). Most of the people refers to a specific group you have already defined (Most of the people in this room have a smartphone).
The Partitive Structure
| Quantifier | The Bridge | Determiner/Pronoun | Noun (if applicable) |
|---|---|---|---|
|
Some / Many
|
of
|
the / these
|
students
|
|
Most / All
|
of
|
my / your
|
friends
|
|
None / Each
|
of
|
them / us
|
(none)
|
|
A few
|
of
|
those
|
boxes
|
|
Much
|
of
|
the
|
water
|
|
Both
|
of
|
you
|
(none)
|
Meanings
This construction allows a speaker to refer to a subset of a specific, defined group rather than a general category.
Specific Group Selection
Selecting a portion of a group identified by 'the', 'these', or 'those'.
“Some of the cars in the parking lot are electric.”
“Many of those buildings were built in the 19th century.”
Possessive Selection
Selecting a portion of a group defined by ownership (my, your, his, etc.).
“Most of my friends live in London.”
“None of her ideas were accepted.”
Pronoun Partition
Using 'of' with object pronouns (us, you, them) to refer to a known group.
“Both of them are coming to the party.”
“Neither of us knew the answer.”
Reference Table
| Form | Structure | Example |
|---|---|---|
|
Affirmative
|
Quantifier + of + the + Noun
|
Some of the people left early.
|
|
Negative
|
None + of + the + Noun
|
None of the cake is left.
|
|
Question
|
Are + any + of + the + Noun...?
|
Are any of the stores open?
|
|
With Pronouns
|
Quantifier + of + Object Pronoun
|
Most of them are coming.
|
|
With Possessives
|
Quantifier + of + My/Your + Noun
|
A few of my friends are here.
|
|
Uncountable
|
Much + of + the + Uncountable
|
Much of the work is done.
|
Formality Spectrum
A majority of the participants expressed their agreement. (Agreement in a group)
Most of the people here agree with you. (Agreement in a group)
Most of 'em are on board. (Agreement in a group)
Most of the squad is down. (Agreement in a group)
The Partitive Bridge
Determiners
- the the
- these/those these/those
Possessives
- my/your/his my/your/his
Pronouns
- us/you/them us/you/them
General vs. Specific
Examples by Level
Some of them are red.
Most of the kids are here.
One of my friends is tall.
All of us are hungry.
Many of the shops are closed today.
A few of these books are mine.
None of them want to go.
Both of my parents are teachers.
Most of the information was useful.
Each of the students has a laptop.
Some of your suggestions were great.
Neither of the options is perfect.
A significant number of the participants dropped out.
Much of the evidence suggests he is innocent.
Most of what she said was true.
Few of the survivors were able to speak.
The committee members, all of whom were experts, agreed.
He wrote three novels, none of which were published.
Some of the more nuanced points were lost in translation.
A great deal of the controversy stems from a misunderstanding.
Little of the original architecture remains intact.
Each of the variables was meticulously controlled.
The findings, much of which had been anticipated, were released.
Any of the aforementioned strategies would suffice.
Easily Confused
Learners use 'most of' for general statements.
Learners think 'of' is always required.
Common Mistakes
Some of students are here.
Some of the students are here.
Most of they are happy.
Most of them are happy.
I like most of books.
I like most books. (or) I like most of the books.
Each of the student has a book.
Each of the students has a book.
They have two cars, both of them are red.
They have two cars, both of which are red.
Sentence Patterns
Most of the ___ in my ___ are ___.
Real World Usage
Most of my followers voted for the first option.
Many of my skills are transferable to this role.
Some of these hotels are already fully booked.
Are any of the desserts gluten-free?
None of the participants reported side effects.
Both of us are running late!
The 'The' Test
No 'Of' for General Truths
All and Both are Lazy
Formal 'None'
Smart Tips
Stop and check: Are you going to say 'the', 'my', or 'them' next? If not, delete the 'of'.
Always use 'Each of the [plural noun]' but follow it with a singular verb.
Pronunciation
The Weak 'Of'
In natural speech, 'of' is rarely stressed. It sounds like /əv/ or even just /ə/.
Quantifier Stress
SOME of the students (not all)
Stressing the quantifier emphasizes the portion being discussed.
Memorize It
Mnemonic
If you see 'the', 'my', or 'them', you need 'of' to join the stem.
Visual Association
Imagine a large pizza (the whole group). You are taking a slice (the quantifier). The 'of' is the cheese stretching between the slice and the pizza, connecting them.
Rhyme
When the group is known and clear, make sure that 'of' is always near.
Story
A king had many jewels. He said, 'I will give some jewels to the poor.' (General). But then he looked at his favorite box and said, 'Actually, I will only give some OF THE jewels in this box.' (Specific).
Word Web
Challenge
Look around your room. Find a group of objects (like books or pens). Say three sentences about them using 'most of these', 'some of my', and 'none of those'.
Cultural Notes
In formal research, 'a majority of' is preferred over 'most of' for precision.
Both dialects use 'all of the' and 'all the' interchangeably, but 'all the' is slightly more common in casual British English.
The word 'of' comes from Old English 'æf', meaning 'away' or 'away from'.
Conversation Starters
How many of your friends live in this city?
Have you seen any of the new movies this year?
Journal Prompts
Common Mistakes
Test Yourself
Which of these is correct?
___ of my friends live in London.
Find and fix the mistake:
Some of they are coming to the party.
Arrange the words in the correct order:
All words placed
Click words above to build the sentence
Match each item on the left with its pair on the right:
___ people believe in ghosts.
Neither ___ the two candidates was suitable.
Find and fix the mistake:
All of students must wear a uniform.
Score: /8
Practice Exercises
8 exercisesWhich of these is correct?
___ of my friends live in London.
Find and fix the mistake:
Some of they are coming to the party.
the / of / none / worked / machines
Match 'Much of the' and 'Many of the'.
___ people believe in ghosts.
Neither ___ the two candidates was suitable.
Find and fix the mistake:
All of students must wear a uniform.
Score: /8
Practice Bank
12 exercises___ the books on this shelf are mine.
Most people in my team are remote.
Choose the correct sentence:
Translate into English: 'Some of the food was delicious.'
Arrange these words into a sentence:
Match the quantifier phrases with the correct example sentences:
She invited three friends, ___ whom arrived late.
Few of students understood the complex topic.
Choose the correct sentence:
Translate into English: 'Most of us prefer to work from home.'
Arrange these words into a sentence:
Match the quantifier use to its context:
Score: /12
FAQ (8)
Yes, but the meaning changes. `Most people` is general (everyone). `Most of the people` is specific (a group you already mentioned).
Both are correct and mean the same thing. `All the` is slightly more common in casual speech.
Because `of` requires a determiner like `the` or `my` to define which students you are talking about.
In conversation, `are` is common. In formal exams or writing, `is` is often preferred.
No. You must use `Each of`. You cannot say `Every of the students`.
Only object pronouns: `us`, `you`, and `them`.
Yes! `Most of the water` becomes `Most of it`.
No. `A few of` is positive (some), while `Few of` is negative (not many).
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
algunos de los / la mayoría de los
Spanish cannot drop the 'of' equivalent as easily as English can in 'Most people'.
certains des / la plupart des
In French, 'la plupart' almost always requires 'des' (of the).
viele der / einige von
German relies more on case endings than just a preposition.
...no uchi no...
The word order is reversed compared to English.
ba'du al-...
There is no separate word for 'of'; the relationship is shown by word proximity.
...zhī zhōng de...
Chinese does not use articles like 'the', making the English 'of the' very difficult.
Learning Path
Prerequisites
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