Adjectives are verbs in Korean
형용사도 동사예요
The rule
There is no "is" between the noun and the description. 좋다 conjugates exactly like 가다 and ends the sentence by itself: 날씨가 좋아요 is literally "the weather goods". So never write 날씨가 좋은 이에요 — the adjective already carries the verb.
명사 + 이/가 + 형용사 + 아요 / 어요
Examples
날씨가 좋아요.
The weather is nice.
이 가방이 비싸요.
This bag is expensive.
한국어가 재미있어요.
Korean is fun.
Keep in mind
날씨가 좋아요
the adjective is the verb
좋은 날씨
before a noun it changes shape — that is A1
Practice questions
Try each one yourself first, then open “Show answer” for the solution and the reason.
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1Choose the correct sentence.
Which form is right?
오늘 날씨가 _____. (좋다)
- 좋아요
- 좋이에요
- 좋어요
- 좋해요
Show answer
Answer: A 좋아요
ㅗ → 아요.
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2Choose the correct sentence.
Which form is right?
이 코트가 _____. (비싸다)
- 비싸아요
- 비싸이에요
- 비싸요
- 비싸어요
Show answer
Answer: C 비싸요
ㅏ + 아요 merge.
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3Choose the correct sentence.
Which form is right?
오늘 정말 _____. (덥다)
- 더워요
- 덥어요
- 덥이에요
- 덥아요
Show answer
Answer: A 더워요
A ㅂ-irregular.
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4Choose the correct sentence.
Which form is right?
숙제가 _____. (어렵다)
- 어렵해요
- 어려워요
- 어렵어요
- 어렵아요
Show answer
Answer: B 어려워요
A ㅂ-irregular.
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5Choose the correct sentence.
Which form is right?
도서관이 _____. (조용하다)
- 조용해요
- 조용이에요
- 조용하요
- 조용하아요
Show answer
Answer: A 조용해요
하다 → 해요.
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6This sentence is wrong. Choose the fix.
Which sentence is correct?
—
- 이 치마가 예쁘요.
- 이 치마가 예쁘이에요.
- 이 치마가 예뻐요.
- 이 치마가 예쁜 이에요.
Show answer
Answer: C 이 치마가 예뻐요.
The adjective is already the verb.
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7This sentence is wrong. Choose the fix.
Which sentence is correct?
—
- 지하철이 빠르아요.
- 지하철이 빠르요.
- 지하철이 빠른 이에요.
- 지하철이 빨라요.
Show answer
Answer: D 지하철이 빨라요.
A 르-irregular: 빠르 → 빨라.
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8Fill in the gap.
Which form is right?
이 방이 _____. (작다)
- 작이에요
- 작어요
- 작아요
- 작해요
Show answer
Answer: C 이 방이 작아요. (작다)
ㅏ → 아요.
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9Fill in the gap.
Which form is right?
한국어가 _____. (재미있다)
- 재미있어요
- 재미있해요
- 재미있아요
- 재미있이에요
Show answer
Answer: A 한국어가 재미있어요. (재미있다)
It ends in 있다 → 있어요.
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10Put the words in the right order.
Build the sentence.
좋아요. 날씨가 오늘
Show answer
Answer: 오늘 날씨가 좋아요.
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