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Prepositions after verbs

Gain from vs gain by

Gain from and gain by are both correct, but they express different ideas. Gain from focuses on the source of benefit, while gain by focuses on the method or action that produces the result.

Quick answer

How do gain from and gain by differ?

Use gain from for the source of benefit: gain from experience. Use gain by for the method or action that helps achieve something: gain by investing carefully.

Students can gain from practical training.
The company gained customers by lowering prices.
You may gain from the workshop even if you are a beginner.

Choose the pattern by meaning

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

1
gain from + source

Receiving benefit from something

Use from to name the experience, activity, or situation that provides value.

She gained confidence from public speaking.
We gained useful insights from the survey.
2
gain by + action

Achieving something through a method

Use by to describe the action or process that produces a gain.

The team gained support by listening to residents.
You can gain flexibility by stretching daily.
3
gain + noun

Receiving or increasing something

Gain can also take a direct object without a preposition.

She hopes to gain experience abroad.
The athlete gained strength during training.

See the difference in context

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

Construction
Example
Meaning
gain from
Many employees gained from the new policy.
Shows the source of benefit or advantage.
gain by
You gain by preparing early.
Shows the method or action that creates an advantage.
gain through
She gained recognition through hard work.
Another way to express method or means.
gain in
The company gained in popularity.
Shows increase in a quality or area.

Common mistakes

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

Using from for a method

Use by when the focus is the action that produces the result.

✕ He gained from working overtime. ✓ He gained by working overtime.

Using by for the source of benefit

Use from when naming the thing that provides benefit.

✕ Students gained by the course. ✓ Students gained from the course.

Forgetting that gain can take a direct object

A preposition is not always necessary after gain.

✓ She gained valuable experience during the internship.

Quick practice

Choose the expression that matches the intended meaning.

1. We gained a lot ___ the training session.
2. They gained attention ___ posting creative videos.
3. She hopes to gain ___ confidence this year.

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Frequently asked questions

Can gain from and gain by both be correct?

Yes, but they express different relationships. From shows the source of benefit, while by shows the method.

Is gain by formal?

It is standard English and appears in both formal and neutral contexts.

Can I use gain without a preposition?

Yes. You can say gain experience, gain confidence, or gain support.

"gamble on" or "gamble with"? "gasp for" or "gasp in"? "gather in" or "gather at"? "gaze at" or "gaze into"? generate by, from, in, for or at? get to, into, in, out or on? giggle at, to, about, like or with? "give to", "give in" or "give by"? glance at, through, around, over or in? glare at, from, after, before or in? glean from, by, in, at or for? "glow in" or "glow with"?

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