Japanese JLPT Grammar Point
~からです (〜kara desu)

~からです (〜kara desu)

Short explanation:

Express the reason or cause; 'because', 'since', 'due to'.

Formation:

Verb-casual + からです, い-Adjective + からです, な-Adjective + ですからです, Noun + ですからです

Examples:

寒いからです、コートを着ています。
Samui kara desu, kooto wo kiteimasu.
I am wearing a coat because it is cold.
この店は安いからです、よく来ます。
Kono mise wa yasui kara desu, yoku kimasu.
I often come to this store because it is cheap.
彼は親切ですからです、みんなに好かれています。
Kare wa shinsetsu desu kara desu, minna ni suka-rete imasu.
Everybody likes him because he is kind.
彼女は学生ですからです、図書館で勉強しています。
Kanojo wa gakusei desu kara desu, toshokan de benkyou shiteimasu.
She is studying at the library because she is a student.

Long explanation:

The ~からです grammar point is used to state the reason or cause of something. It can be translated as 'because', 'since', or 'due to' in English. This grammar point can be used with verbs, い-adjectives, な-adjectives, and nouns.

Detailed Grammar notes:

Processing keyword: ~からです (〜kara desu)

Japanese Grammar Point: ~からです (〜kara desu)

~からです (〜kara desu)

1. Introduction

The grammar point ~からです (〜kara desu) is a fundamental construct in Japanese used to express reasons or explanations. It translates to "because..." or "it's because..." in English. Mastering this expression will enhance your ability to articulate your thoughts clearly, especially when providing reasons or justifications.


2. Core Grammar Explanation

Meaning

  • ~からです is used to state the reason for something.
  • It adds clarity by explaining why something is the case.

Structure

The basic formation involves attaching からです to the plain form of a verb, adjective, or noun clause.

Formation Diagram

Part of Speech Formation Before からです
Verb Plain form (辞書形)
い-adjective Plain form
な-adjective Stem +
Noun Noun +
  • Sentence Structure:
    [Reason Clause in Plain Form] + からです。
    

Detailed Explanation

  1. For Verbs:
    • Use the plain form of the verb before からです.
    • Example:
      • 学校へ行きますからです。 (Incorrect)
      • 学校へ行くからです。 (Correct)
      • It's because I am going to school.
  2. For い-Adjectives:
    • Use the adjective as is (plain form).
    • Example:
      • 忙しいからです。
      • It's because (I'm) busy.
  3. For な-Adjectives and Nouns:
    • Add before からです.
    • Example (な-adjective):
      • 静かだからです。
      • It's because it's quiet.
    • Example (noun):
      • 学生だからです。
      • It's because (I'm) a student.

3. Comparative Analysis

~のでです (〜node desu)

  • Similarities:
    • Both からです and のでです express reasons.
  • Differences:
    • からです emphasizes a subjective reason or personal opinion.
    • のでです is more objective and formal, indicating a natural consequence. Example Comparison:
  • からです:
    • 疲れたからです。
    • It's because I'm tired. (Personal feeling)
  • のでです:
    • 雨が降るのでです。
    • It's because it will rain. (Objective fact)

4. Examples in Context

Formal Speech

  1. 会議は延期します。それは重要な問題があるからです。
    • The meeting is postponed. That's because there is an important issue.
  2. 申し訳ありませんが、参加できません。それは先約があるからです。
    • I'm sorry, but I can't attend. It's because I have a prior engagement.

Informal Speech

  1. 早く寝るよ。明日早いから。
    • I'm going to bed early. Because I've got an early morning tomorrow.
  2. なんで怒ってるの?
    • Why are you angry?
    • 彼が嘘をついたからだ。
    • Because he lied.

Written Context

  1. この商品をおすすめします。それは品質が高いからです。
    • We recommend this product. That's because it has high quality.
  2. プロジェクトが成功した。それはチームワークが良かったからです。
    • The project was a success. That's because the teamwork was good.

Casual Conversation

  1. A: どうしてパーティーに来なかったの?
    • Why didn't you come to the party?
    • B: 忙しかったから。
    • Because I was busy.
  2. A: なんでこの映画が好きなの?
    • Why do you like this movie?
    • B: 面白いからだよ。**
    • Because it's interesting.

5. Cultural Notes

Cultural Relevance

  • In Japanese communication, providing reasons is important for maintaining harmony and understanding.
  • Using ~からです to explain oneself is considered polite and helps prevent misunderstandings.

Politeness and Formality

  • です adds a level of politeness.
    • から (without です) is more casual.
    • からです is appropriate in formal situations.
  • Politeness hierarchy is crucial in Japanese culture; choosing the correct form shows respect.

Idiomatic Expressions

  • そういうことだからです。
    • That's the way it is. (Used to conclude an explanation)
  • お腹が空いたからです。
    • Because I'm hungry. (Commonly used to explain actions related to eating)

6. Common Mistakes and Tips

Error Analysis

  1. Using the Polite Form Before からです
    • Incorrect: 食べますからです。
    • Correct: 食べるからです。
    • Tip: Use the plain form, not the ます form.
  2. Forgetting だ with な-Adjectives and Nouns
    • Incorrect: 便利からです。
    • Correct: 便利だからです。
    • Tip: Remember to add before からです with な-adjectives and nouns.
  3. Mixing Formal and Informal Speech
    • Incorrect: 忙しいからだよです。
    • Correct: 忙しいからです。 (Formal) / 忙しいからだよ。 (Informal)
    • Tip: Be consistent with the level of formality.

Learning Strategies

  • Mnemonic Device: Think of から as the "cause", since both start with a "c/k" sound.
  • Practice Transformation: Convert polite sentences to use からです.
    • きれいです (It's beautiful) ➔ きれいだからです (Because it's beautiful)
  • Flashcards: Create flashcards with sentences missing or with verbs in the ます form to practice correct forms before からです.

7. Summary and Review

Key Takeaways

  • ~からです is used to express reasons, translating to "because..." or "it's because...".
  • Always use the plain form of verbs and adjectives before からです.
  • Insert before からです when using な-adjectives or nouns.
  • Be mindful of the level of formality in your speech.

Quick Recap Quiz

  1. Fill in the blank with the correct form: 彼女は来ませんでした。それは忙しい___。
    • She didn't come. It's because she's busy. Answer: からです
  2. True or False: You should use the ます form of verbs before からです. Answer: False
  3. Correct the mistake in the sentence: この本は面白いですからです。 Corrected Sentence: この本は面白いからです。
  4. Choose the correct form: 静か___からです。
    • a)
    • b) Answer: b) だ (静かからです。)

By understanding and practicing the use of ~からです, you'll be able to express reasons clearly and appropriately in various situations. Keep practicing with different verbs, adjectives, and nouns to become more comfortable with this essential grammar point.

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Public Alpha version Open Source (GitHub). This site is currently undergoing active development. You may (will) encounter bugs, inconsistencies, or limited functionality. Lots of sentences might not sound natural. We are progressively addressing these issues with native speakers.


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