Prepositions after verbs

Explain to or explain in?

Use explain to before a person who receives the explanation. Use explain in for language, style, or form.

Quick answer

Which preposition follows explain?

Use explain to someone when naming the listener. Use explain in something when referring to a language, style, or level of detail, such as explain in English or explain in simple terms.

Can you explain to me how this works?
She explained in plain English.
The teacher explained to the class why the test changed.

Choose the pattern by meaning

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

1
explain to + person

Naming the listener or audience

Use to before the person receiving the explanation.

Please explain to the guests how the system works.
He explained to us why the meeting was delayed.
2
explain in + language or style

Describing the form of the explanation

Use in with languages, wording, or style.

Could you explain in simpler terms?
The guide explained in Spanish.
3
explain + noun clause

Explaining something directly

Explain is commonly followed directly by what is being explained.

She explained why the files were missing.
Can you explain the process again?

See the difference in context

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

Construction
Example
Meaning
explain to
She explained the rules to the players.
Names the person receiving the explanation.
explain in
He explained the idea in simple language.
Describes the language, style, or form used.
explain about
She explained about the new policy.
Sometimes heard in informal speech, but usually explain the new policy is more natural.
explain why
Please explain why the system failed.
Introduces a clause with the topic being explained.

Common mistakes

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

Using explain to before a thing

To is used for people or audiences, not topics.

✕ She explained to the problem. ✓ She explained the problem.

Omitting to before a listener

Use to when naming the person receiving the explanation.

✕ He explained me the rules. ✓ He explained the rules to me.

Using in for a listener

In describes style or language, not the audience.

✕ She explained in me. ✓ She explained to me.

Quick practice

Choose the expression that matches the intended meaning.

1. The manager explained the changes ___ the staff.
2. Can you explain it ___ plain English?
3. She explained ___ the project failed.

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Frequently asked questions

Can I say explain me?

No. Standard English uses explain to me or explain it to me.

Is explain about correct?

It appears in informal speech, but explain plus the topic is usually more natural, such as explain the plan.

Can explain in refer to location?

Yes, in can sometimes introduce a place adjunct, such as explained it in the meeting, but this is separate from the verb’s main pattern.

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