The collocation "be interested in" is used to express a feeling of wanting to know or learn about something or someone. It signifies that an object or activity has captured one's attention or curiosity. In a professional or commercial context, it can also indicate a desire to participate in a deal or acquire a product.
This expression is semi-idiomatic. While the individual words retain much of their literal meaning, the specific pairing of the adjective "interested" with the preposition "in" is a fixed grammatical requirement. The register is neutral, making it equally appropriate for casual conversation, academic papers, and business correspondence.
The most common grammatical pattern for this expression is subject + be (conjugated) + interested + in + object. The object following the preposition "in" can be a noun, a pronoun, or a gerund (the -ing form of a verb).
Because "interested" functions as an adjective in this structure, it cannot be separated from its preposition "in" when defining the target of interest. Using the wrong preposition (such as "interested about") or the wrong verb form (such as "I have interest in" instead of "I am interested in") will sound unnatural to native speakers.
These examples are sourced from be interested in on Ludwig.guru.
"Be interested in the person, not interesting." — wikihow.com
"I'll be interested in Times readers' reactions." — nytimes.com
"Hess continued to be interested in aviation." — en.wikipedia.org
"I think you'll be interested in this." — huffingtonpost.com
"I would be interested in that"." — independent.co.uk
| Phrase | Context |
|---|---|
| be keen on | More common in British English; suggests a higher level of enthusiasm or liking. |
| be into | Informal and conversational; used to describe hobbies or personal passions. |
| have an interest in | Slightly more formal; shifts the focus to the possession of a specific curiosity. |
| be fascinated by | Much stronger than "interested"; implies intense attraction or wonder. |
| take an interest in | Emphasizes the action of beginning to care about or pay attention to something. |
| Expression | Meaning | Grammatical Pattern | Register |
|---|---|---|---|
| be interested in | To have curiosity or a desire to learn about something. | subject + be + interested + in + [noun/gerund] | Neutral (Formal/Informal) |
No, the components of be interested in cannot be separated by the object. The preposition "in" must immediately follow the adjective "interested" to correctly link to the topic of interest.
While both express curiosity, be into is a highly informal phrasal verb used for personal hobbies, whereas be interested in is neutral and suitable for professional or academic contexts. Additionally, be interested in can be followed by a wider variety of abstract concepts.
Learners often use the wrong preposition, such as 'interested about' or 'interested on', instead of the correct 'interested in'. In English, the adjective "interested" has a fixed collocation with the preposition "in," and using other prepositions is considered a grammatical error.
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