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Prepositions with pronouns

Using “of it,” “in it,” and “for it”

These phrases are all grammatical, but they express different relationships such as possession, location, and purpose.

Quick answer

How do these phrases differ?

Of it usually refers to a part or quality of something. In it refers to being inside something or included in it. For it often shows purpose, benefit, or support.

I understood most of it.
There was no sugar in it.
She paid for it herself.

Choose the pattern by meaning

These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.

1
of it

Part, amount, or quality

Use of it to refer to a portion or characteristic of something already mentioned.

Only half of it was true.
2
in it

Inside or included

Use in it for contents, position, or inclusion.

There are important details in it.
3
for it

Purpose, benefit, or payment

Use for it when expressing support, intention, or payment.

Who is going to pay for it?
4
with it

Association or possession

With it can describe accompaniment or having something available.

Bring the charger with it.

See the difference in context

The same subject can take different constructions because each sentence answers a different question.

Construction
Example
Meaning
of it
I remember some of it.
refers to a part or amount
in it
There is a mistake in it.
refers to content or position inside
for it
They voted for it.
refers to support, purpose, or payment
about it
We talked about it.
useful alternative for discussing a topic

Common mistakes

Some combinations appear in real text but do not mean what learners often assume.

Using in it for quantity

In it refers to content, not amount.

✕ Half in it was missing. ✓ Half of it was missing.

Using of it for location

Of does not show physical inclusion.

✕ There is sugar of it. ✓ There is sugar in it.

Using for it without a clear meaning

For usually needs a purpose, benefit, or support meaning.

✕ I left the keys for it. ✓ I left the keys in it.

Quick practice

Choose the expression that matches the intended meaning.

1. Only part ___ was useful.
2. There is a photo ___ .
3. Did you pay ___ ?

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Frequently asked questions

Is of it grammatically correct?

Yes. It commonly refers to part of something, as in some of it.

When do we use in it?

Use in it for things located inside something or included within it.

What does for it mean?

For it can show payment, support, purpose, or benefit depending on context.

of, about, against, to or for racism? of, about, for, in or on friendship? of, about, for, on or to thing? of, about, for, to or with sex? of, about, on, to or for moon? "of access" or "with access"? "of accommodation" or "for accommodation"? "of accuracy" or "for accuracy"? "of action" or "in action"? "of actor", "with actor" or "by actor"? "of address" or "to address"? "of administration" or "in administration"?

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