Japanese Grammar Exercise: Explanatory 「のだ」「のです」

Explanatory のだ のです

Before starting the exercise for explanatory 「のだ」「のです」, please clarify any doubts you may have about the grammatical rules by referring to your grammar guidebook or dictionary. The Instantaneous Composition Method requires you to compose sentences with the target sentence pattern(s) over and over in order to use them almost effortlessly. You should already have the necessary knowledge.

Genki I - Lesson 12: ~んです
Tae Kim's Guide - Noun-related Particles (*second half)

Instantaneous Composition Exercise for Explanatory 「のだ」「のです」

This is not a translation exercise. This is the Instantaneous Composition Exercise. As if a reflexive action, try to create an equivalent Japanese sentence shortly after reading an English script. Try not to think for more than three seconds.

Natural Speed with Pauses

English and Hidden Japanese Scripts

(I) didn’t study. (Explanatory) (It) was difficult. 
べんきょうしませんでした。 むずかしかったんです。
(I) read books. (Explanatory) (I) was free.
(I) didn’t sleep. (Explanatory) (I) was not sleepy.
(I) stayed home. (Explanatory) (I) was not healthy.
(I) cried. (Explanatory) (I) was scared.
きました。 こわかったんです。
Are (you) busy? => (Explanatory) Yes, (I will) leave soon.
いそがしいですか? => はい、すぐるんです。
Is Japanese easy? => (Explanatory) No, Kanji is difficult.
ほん簡単かんたんですか? => いいえ、かんむずかしいんです。 
Will (you) eat cake? => (Explanatory) Yes, (I) like (it). 
ケーキをべますか? => はい、きなんです。
Will (you) go to school? => (Explanatory) No, today is a day off.
学校がっこうきますか? => いいえ、今日きょうやすみのなんです。
Will (you) buy a car? => (Explanatory) No, a car is expensive.
くるまいますか? => いいえ、くるまたかいんです。 


のだ is the casual form and のです is the polite form. In spoken Japanese, they are often pronounced at んだ and んです respectively for the sake of simplicity in terms of pronunciation.

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