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Japanese Adjectives and Counters

Sep 3, 2025

Overview

This lecture covers Genki 1 Lesson 5, focusing on Japanese adjectives (e- and na-), their conjugations, modifying nouns, expressing likes/dislikes, forming "let's" statements, and using counters.

Types of Japanese Adjectives

  • There are two types of adjectives: i-adjectives (ending in ใ„) and na-adjectives.
  • I-adjectives end in the ใ„ character and conjugate directly.
  • Na-adjectives may not always end in ใช and require memorization for exceptions.

Conjugating Adjectives

  • I-adjective present: tanoshii (fun), can add desu for politeness.
  • I-adjective negative: replace ใ„ with ใใชใ„ (tanoshiku nai = not fun).
  • Na-adjective present: use as is or add desu for politeness.
  • Na-adjective negative: add ใ˜ใ‚ƒใชใ„ (genki janai = not energetic).
  • "Good" (ใ„ใ„) is colloquially used, but conjugates as ใ‚ˆใ„ (yokunai, yokatta).

Past Tense of Adjectives

  • I-adjective past: replace ใ„ with ใ‹ใฃใŸ (tanoshikatta = was fun).
  • I-adjective past negative: ใใชใ„ becomes ใใชใ‹ใฃใŸ (tanoshikunakatta = was not fun).
  • Na-adjective past: add ใงใ—ใŸ (genki deshita).
  • Na-adjective past negative: ใ˜ใ‚ƒใชใ„ becomes ใ˜ใ‚ƒใชใ‹ใฃใŸ (genki janakatta).

Modifying Nouns with Adjectives

  • I-adjectives: directly precede the noun (tanoshii hito = fun person).
  • Na-adjectives: add ใช between adjective and noun (kirei na keshiki = pretty view).

Expressing Likes and Dislikes

  • Use ๅฅฝใ (suki = like) and ๅซŒใ„ (kirai = dislike) as na-adjectives.
  • Sentence structure: X ใฏ Y ใŒๅฅฝใใงใ™ (X likes Y); X ใฏ Y ใŒๅซŒใ„ใงใ™ (X dislikes Y).
  • To modify nouns: ๅฅฝใใชๅ‹•็‰ฉ (animal I like), ๅซŒใ„ใช้ฃŸใน็‰ฉ (food I dislike).
  • Intensifiers: ๅคงๅฅฝใ (daisuki = love), ๅคงๅซŒใ„ (daikirai = hate).
  • Use ใŒ with suki and kirai.

"Let's" in Japanese

  • Masu-stem + ใพใ—ใ‚‡ใ† (mashou) forms "let's" statements (tabemashou = let's eat).
  • Add ใ‹ (ka) for "shall we?" (tabemashou ka? = shall we eat?).

Counters in Japanese

  • Counters are used with numbers to count objects.
  • ๆžš (mai) is the counter for thin, flat objects (paper, plates).
  • Structure: noun + number + counter (kami wo nimai = two sheets of paper).
  • Flexible placement: before or after the noun.
  • Use general counters (ใฒใจใค, ใตใŸใค, etc.) if unsure of the specific counter.

Key Terms & Definitions

  • I-adjective (ใ„-adjective) โ€” Adjective ending in ใ„, conjugates by changing the ending.
  • Na-adjective (ใช-adjective) โ€” Adjective modifying nouns with ใช, conjugates with desu/ja nai.
  • Desu (ใงใ™) โ€” Politeness marker, "is/am/are."
  • Suki (ๅฅฝใ) โ€” To like, treated as a na-adjective.
  • Kirai (ๅซŒใ„) โ€” To dislike, treated as a na-adjective.
  • Masu-stem โ€” The verb stem used before ใพใ™ or ใพใ—ใ‚‡ใ†.
  • Counter โ€” Word used with numbers to count objects (e.g., ๆžš).
  • Mai (ๆžš) โ€” Counter for flat objects.

Action Items / Next Steps

  • Review Genki 1 Lesson 5 textbook exercises on adjectives, "let's" forms, and counters.
  • Memorize adjective conjugation patterns for present, negative, and past tenses.
  • Practice using suki/kirai sentence structures and modifying nouns with adjectives.
  • Prepare answers to "ใฉใ‚“ใช้ŸณๆฅฝใŒๅฅฝใใงใ™ใ‹๏ผŸ" (What kind of music do you like?).