"Are you have a pen?" and why Korean students stack "do" and "have": verb-do confusion in questions

Korean has no separate question word like "do", so students often add an auxiliary to every verb, even ones that already act like one. Here is why, and drills that fix it step by step.

Park English2026-10-283 min read

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"Are you have a pen?" sounds wrong to you the second you hear it. To a Korean speaker, it sounds perfectly logical. That gap is worth explaining out loud, because once a student sees the reason, the fix sticks.

Why this happens

Korean builds a question by adding a particle to the end of a statement. 가요 (go) becomes 가요? (go?) just by tone and the question mark. There is no extra word inserted, and there is no change to the verb itself.

English does not work that way. Most verbs need do or does pulled to the front to make a question ("Do you like pizza?"). But a small group of verbs, called auxiliary verbs (helping verbs that go with another verb or stand alone as the main verb), skip "do" completely: be, have (when it means possess), and modals like can and will. Students learn the "do" rule first, usually in middle school, and then apply it to everything, including the verbs that should not get a "do" at all. That is how you get "Are you have a pen?" (mixing "be" and "have") and "Does she can swim?" (adding "do" to a modal that already does the job).

The error is not carelessness. It is a student correctly applying an English rule to the wrong verb, because Korean gives them no built-in signal for which verbs are different.

The verbs that cause the most trouble

VerbQuestion formCommon student error
have (possession)Do you have a pen?Are you have a pen?
knowDo you know him?Are you know him?
likeDo you like coffee?Are you like coffee?
canCan you swim?Do you can swim?
beAre you tired?Do you are tired?

Notice the pattern: students borrow "be" question order for ordinary verbs, or add "do" to a verb that is already its own auxiliary. Both come from the same gap: no particle in Korean tells them which rule applies.

How to explain it to the class

Tell students there are two teams of verbs in English questions.

  1. Team "do": most action and state verbs (like, want, know, have-for-possession, go, eat). They need "do" or "does" pulled to the front.
  2. Team "already has a helper": be, can, will, should, must. These move to the front by themselves, no "do" needed.

Have students sort a list of ten verbs into the two teams before they try writing questions. Sorting first, writing second, works better than jumping straight to full sentences.

Drills, easy to hard

Level 1, fix the sentence. "Are you like pizza?" becomes "Do you like pizza?"

Level 2, choose do/does/is/are/can. "___ she have a dog?" (Does)

Level 3, build the question from a statement. "You have a sister." becomes "Do you have a sister?"

Level 4, two verbs in one sentence. "She can speak English and she likes it." becomes two questions: "Can she speak English?" and "Does she like it?"

Level 5, student-written. Give a topic (weekend plans, favorite food, family). Students write three questions using at least one "do" verb and one "team already has a helper" verb, then ask a partner.

By level 4, most of the mixing disappears, because students are no longer guessing. They are checking which team the verb plays for first.

Common questions

Why do Korean students add "do" to "can" so often, like "Does she can swim?"
In Korean, there is no separate helper word for ability. Students learn the "do" rule for ordinary verbs first and extend it to "can" before they fully separate modal verbs into their own group.
Is this the same mistake as leaving out articles like "a" or "the"?
No. Article mistakes come from Korean having no article system at all. This mistake comes from Korean building questions with a particle instead of a separate helper word, which is a different gap.

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