Grammar · Prepositions
Noun + Preposition
Interest in, reason for, solution to: many nouns come with their own preposition. Learn the most useful pairs with the film The Theory of Everything.
Grammar › Prepositions › Noun + Preposition
The rule in one sentenceMany nouns travel with a fixed preposition, so learn them in pairs: nouns about a subject or a change usually take in (interest in, increase in), while nouns about a cause, a wish or a feeling towards something often take for (reason for, need for).
About the film
The Theory of Everything is a 2014 biographical drama about the physicist Stephen Hawking. In 1963, Stephen is a brilliant but disorganised student at Cambridge University with a huge interest in time and the universe. At a party he meets Jane Wilde, a student of languages with a strong belief in God, and the two quickly discover a shared passion for big questions.
What does it do?
In English, the preposition after a noun is often not a free choice. The noun decides it, and the pairing is usually fixed, even when another preposition seems more logical. That is why it helps to learn interest in as one piece, rather than learning interest and then guessing the next word.
Two groups cover a lot of everyday use. Nouns about a topic, a quality or a rise and fall usually take in. Nouns about a cause, a need or a feeling directed at something often take for. Other nouns take to, of or between, and those are best learned one by one.
Look at the nouns before each preposition. Interest and confidence point to a subject or a person you trust, so they take in. Reason and talent point to a cause or an ability aimed at something, so they take for. You can’t swap them: a reason in or an interest for sounds wrong to a native speaker.
Stephen has an interest in physics. (physics is the subject he likes)
Stephen has a passion for physics. (a strong feeling aimed at physics)
The meaning is close, but each noun keeps its own partner. Learn the noun and its preposition together, like one word.
Visual guide
Teacher Teddy’s illustrated guide to this rule is being drawn — the full swipe-through infographic will appear here soon.
How to make it
noun + in — topic, trust, change
Stephen’s interest in time keeps growing.
Jane’s friends have little confidence in his plans.
little / no + noun + inIs there any difference in their way of thinking?
Any / much + noun + innoun + for — cause, wish, feeling
His supervisor has great respect for his mind.
There’s no need for Stephen to work all night.
no need for + person + to + verbWhat’s the reason for all these late nights?
What’s the reason for …?When to use each one
noun + in
noun + for
Words that help: other useful pairs
Some common nouns take a different partner. Learn these as fixed pairs too.
to → an answer, a reaction or a link
of / between → a part, an example or two things
Common mistakes
❌ Stephen has a great interest for physics.
✅ Stephen has a great interest in physics.
Interest always takes in when it means a subject you like.
❌ What was the reason of his decision?
✅ What was the reason for his decision?
Reason takes for, never of.
❌ There was a big increase of students at Cambridge that year.
✅ There was a big increase in students at Cambridge that year.
Increase, rise and fall take in before the thing that changes.
❌ He found the solution of the problem in one night.
✅ He found the solution to the problem in one night.
Solution takes to. The same goes for answer to and key to.
One more thing
This part is a little harder. You can come back to it later.
Some nouns change meaning with a different preposition. A difference in something names the feature that differs, while a difference between two things compares them as wholes. In the same way, an increase in tells you what went up, but an increase of tells you by how much. Precise writers use these pairs to say exactly what they mean.
✅ There is a clear difference between Stephen and Jane. (comparing two people)
✅ There is a clear difference in the way they see the world. (one feature that differs)
✅ The class saw an increase of 20% in top marks. (the size of the change)
Practice: choose the right preposition
Eight questions. Choose one preposition. You get the answer, and why.
1. Stephen has a huge interest ___ the beginning of time.
Interest takes in when it means a subject you like.
2. Nobody could explain the reason ___ his tiredness.
Reason always takes for.
3. Jane has a strong belief ___ God.
Belief takes in, just like the verb believe in.
4. Stephen has a real talent ___ mathematics.
Talent is an ability aimed at something, so it takes for.
5. He found the solution ___ a very hard problem.
Solution takes to, like answer to.
6. There’s been an increase ___ the number of physics students.
Increase takes in before the thing that changes.
7. His teachers have great respect ___ his ideas.
Respect, as a feeling towards something, takes for.
8. What’s the difference ___ Stephen and his friends?
When you compare two people or things as wholes, use between.
Your turn
Choose one ending. Then listen to your sentence.
Every sentence here is correct. Pick the one that is true for you. Say it out loud too!
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