Sort into columns

Past forms: endings, stem changes and negatives

Tap a tile, then tap its column. Follow the sorting rule on each board.

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Question 1

Sort these nouns by the ending to attach when saying what someone or something was, using the lesson’s polite past forms.

Question 2

Choose the polite past ending for each dictionary form. Treat 하다 predicates as a separate group.

Question 3

Make each polite past form with its required stem change, then sort by whether it ends in 았어요 or 었어요, including contractions.

Question 4

Sort these verbs by whether the stem-final consonant stays unchanged when you make the polite past form. For 걷다, use the meaning to walk.

Question 5

Sort each negative phrase by both its tense form and its meaning. Use the ending shown, without imagining an extra time expression.

Practice Past forms: endings, stem changes and negatives 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 Past forms: endings, stem changes and negatives in everyday Korean.

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