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N5

i-Adjectives

About 8 minutes · written and reviewed by Haruki Yamamoto

Section 1 of 3

What i-Adjectives Do

Most i-adjectives end in い in their plain form. They can come directly before a noun or end a sentence with です in polite speech.

  1. Target signal

    この ほんは おもしろいです。

    This book is interesting.

    Notice how i-Adjectives shapes the meaning of this sentence in context.

    Vocabulary notes
    おもしろい
    interesting
    この
    this
    です
    to be (polite); is; am; are
  2. Compare in context

    あたらしい かばんです。

    It is a new bag.

    Notice how i-Adjectives shapes the meaning of this sentence in context.

    Vocabulary notes
    あたらしい
    new
    かばん
    bag
    たら〜たら
    if; when
  3. Compare in context

    きょうは さむいです。

    It is cold today.

    Notice how i-Adjectives shapes the meaning of this sentence in context.

    Vocabulary notes
    きょう
    today
    さむい
    cold
    です
    to be (polite); is; am; are

Section 2 of 3

Before Nouns and at the End

When an i-adjective comes before a noun, do not add な. The adjective directly modifies the noun. At the end of a sentence, the adjective can stand on its own with or without です depending on register.

  1. Target signal

    やすい レストランを しっています。

    I know an inexpensive restaurant.

    Notice how i-Adjectives shapes the meaning of this sentence in context.

    Vocabulary notes
    しっています
    know; am familiar with
    レストラン
    restaurant
    います
    there is; exists (animate)
  2. Preview

    その みちは ながいです。

    That road is long.

    Notice how i-Adjectives shapes the meaning of this sentence in context.

    Vocabulary notes
    ながい
    long
    その
    that
    です
    to be (polite); is; am; are
  3. Preview

    この ケーキは あまいです。

    This cake is sweet.

    Notice how i-Adjectives shapes the meaning of this sentence in context.

    Vocabulary notes
    あまい
    sweet
    ケーキ
    cake
    この
    this

Section 3 of 3

Reading in Context

In short reading passages, i-adjectives help the reader quickly identify opinions and qualities. They often answer questions such as 'What kind of thing is it?' or 'How is it?'

  1. Target signal

    わたしの まちは しずかで、みずが きれいです。

    My town is quiet, and the water is clean.

    Notice how i-Adjectives shapes the meaning of this sentence in context.

    Vocabulary notes
    きれい
    pretty; neat
    しずか
    quiet
    わたし
    I; me
  2. Preview

    この くつは かるいので、たくさん あるけます。

    These shoes are light, so I can walk a lot.

    Notice how i-Adjectives shapes the meaning of this sentence in context.

    Vocabulary notes
    あるけます
    can walk
    たくさん
    many; a lot
    かるい
    light; lightweight

Reading in context

Read for meaning before checking the answer

Before you read

Read once for the situation. Then notice how i-Adjectives changes the meaning before you check the translation.

この ほんは おもしろいです。 あたらしい かばんです。 きょうは さむいです。 やすい レストランを しっています。 その みちは ながいです。 この ケーキ

Show English translation

This book is interesting. It is a new bag. It is cold today. I know an inexpensive restaurant. That road is long. This cake is sweet. My town is quiet, and the water is clean. These shoes are light, so I can walk a lot.

Contextual questions

Answer from the passage before you reveal each explanation.

  1. What is the first reading job for this passage?

    • Identify the situation and how i-Adjectives changes it.
    • Translate every word before using context.
    • Ignore the ending because only vocabulary matters.
    • Choose an answer before reading the full passage.
    Check the answer

    Identify the situation and how i-Adjectives changes it.

    The goal is to use the situation first, then confirm the role of i-Adjectives in context.

Guided practice

Apply the lesson in a few different ways

Work through each prompt, then check the explanation before moving on.

Activity 1 of 4Choose the best context

Which is an i-adjective?

Activity 2 of 4Fill the blank

Complete the chunk that carries the lesson meaning (i-Adjectives).

この ほんは ___です。

Activity 3 of 4Put it in order

Put these related examples back into the order used in the lesson.

  1. 1あたらしい かばんです。
  2. 2きょうは さむいです。
  3. 3この ほんは おもしろいです。
Activity 4 of 4Infer from the passage

What should guide your interpretation of i-Adjectives in the mini-reading?

Mastery check 1/4

Which is an i-adjective?