The Use of the Past Short Form
As discussed in the Japanese present short form lesson plan, the short form is a quicker and more informal version of verbs, adjectives and nouns. Emphasize that the short version of the past tense also holds the same cultural considerations: since it is informal, it should only be used between people who are close. If a higher ranking person uses the short form, the lower ranking person should not respond in the short form.
Past Tense Short Form for Verbs
When teaching the past tense affirmative of the short form, point out that it is similar to the て-form. Start by writing two examples of verbs in the て-form, then write the short form next to it. Underline the different endings:
食べて_(tabete)_ → 食べた_(tabeta)_
読んで_(yonde)_ → 読んだ_(yonda)_
Explain that the て/で changes to た/だto make the short form present affirmative. Do the same with the negative past short form, but explain the い changes to かった. For example:
食べない_(tabenai)_ → 食べなかった_(tabenakatta)_
読まない_(yomanai)_ → 読まなかった_(yomanakatta)_
Note the two irregular verbs: 行く (iku) → 行った_(itta)_ and いい _(ii)_ → よかった _(yokatta)_ , よくなかった _(yokunakatta)_
Test comprehension by making a worksheet that has both negative and affirmative conjugations. Alternate between the short form and て-form, and have students write out the other form. For example, if the question has 読んで, the student should write 読んだ.
Past Tense Short Form for Adjectives
Once the verbs have been covered, move on to adjectives. Point out that い-adjectives follow the similar part as verbs: the い from the present short form becomes かった. Write out examples like:
かわいい_(kawaii)_ → かわいかった_(kawaikatta)_
かわいくない_(kawaikunai)_ → かわいくなかった_(kawaikunakatta)_
Next, move onto the な-adjectives. Explain that the だ added to the end of the adjective in the present short form becomes だった in the affirmative, and the い becomes かった. For example:
静かだ_(shizukada)_ → 静かだった_(shizukadatta)_
静かじゃない_(shizukajanai)_ → 静かじゃなかった_(shizukajanakatta)_
This time, make flashcards that have either the past short form or present short form. Make them large enough for students to see from their seats. Hold them up and call on students to change the adjective into present or past.
Past Tense Short Form for Nouns
The last section of the lesson is going over the nouns. Like the present short form, it is the です that changes. Like the な-adjectives, the だfrom the present becomes だった in the affirmative, and the い becomes かった, such as:
試験だ_(shikenda)_ → 試験だった_(shikendatta)_
試験じゃない_(shikenjanai)_ → 試験じゃなかった_(shikenjanakatta)_
Make large flashcards for the nouns as well, and shuffle them into the adjective pile. Check to see if the students can form both the present and past short forms.
- Banno, E., Ohno, Y., Sakane, Y. and Shinagawa, C. An Integrated Course in Elementary Japanese. The Japan Times, 1999