いけいようしの ふつうけい
い-adjectives, plain — the easiest one yet
えいがは たのしかった！
“The movie was fun!”
Step 1
Just drop ですです を とるだけ
Good news: い-adjectives have no new form. You already built all four in Unit 24 — present, negative, past, past-negative. To make them plain, just take off the です. That's the whole rule, for every tense.
ていねいpolite
ふつうplain
Present / futureaffirmative
Present / futurenegative
Pastaffirmative
Pastnegative
つくり方です を とるだけjust drop です
(every form!)✓ Unit 24
(every form!)✓ Unit 24
Here are more い-adjectives in all four plain forms. 🔊 Tap any form to hear it.
presentneg.pastpast neg.
big
small
tall / expensive
cheap
new
old
delicious
fun
good!
Only いい (good) is irregular: every form except the present uses the よ- stem — よくない / よかった / よくなかった.
Step 2
Practice: です → the 4 plain formsフォームの れんしゅう
See the ていねい (です) form, say all four plain forms in your head, then tap the card to check.
Card 1 / 9
ていねいおおきいですbigtap to reveal the 4 plain forms
Step 3
Quiz: pick the right plain formクイズ
Read the sentence and the English, then choose the correct plain form.
Question 1 / 6 · 0 correct
fill the blankこの みせは ◯◯。This shop wasn't cheap.
That was the easy one! Next: な-adjectives & nouns in the plain form.