Sort into columns

Building Reasons: Stems, Nouns and Past Forms

Tap each tile, then tap its column. Place every tile.

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Question 1

Sort each dictionary form by the change its stem needs before -(으)니까.

Question 2

Sort these nouns by the forms available when they introduce a reason with -(이)니까.

Question 3

Check the reason forms: sort each phrase into correctly formed or needing correction.

Question 4

Using the lesson’s standard past-reason pattern, sort these clauses by their past-marker combination.

Question 5

Sort each reason clause by whether it describes a current situation or an earlier event.

Practice Building Reasons: Stems, Nouns and Past Forms with this interactive word-sorting exercise of 5 questions. Tap each word into the column it belongs in, then submit to check your answers and get detailed feedback on every set.

Practicing grammar in real sentences — rather than memorising rules in isolation — is one of the most effective ways to make a structure stick. You can retry as many times as you like to build accuracy and confidence using Building Reasons: Stems, Nouns and Past Forms in everyday Korean.

Looking for more practice? See all exercises for this lesson.