Japanese JLPT Grammar Point
Verb る こと が できます (ru koto ga dekimasu)

Verb る こと が できます (ru koto ga dekimasu)

Short explanation:

Express the potential form, or the ability to do something.

Formation:

Verb[る] + ことができます

Examples:

この問題を解くことができます。
Kono mondai o toku koto ga dekimasu.
I can solve this problem.
彼は英語を話すことができます。
Kare wa eigo o hanasu koto ga dekimasu.
He can speak English.
私は高い所に登ることができません。
Watashi wa takai tokoro ni noboru koto ga dekimasen.
I cannot climb to high places.
彼女はピアノを弾くことができます。
Kanojo wa piano o hiku koto ga dekimasu.
She can play the piano.

Long explanation:

The 〜ることができます grammar point is used to express that someone is capable of doing something or that something is possible. It is essentially the potential form of the verb. The formation is made by changing the verb to a noun phrase and adding ができます.

Detailed Grammar notes:

Processing keyword: Verb る こと が できます (ru koto ga dekimasu)

Japanese Grammar Point: Verb る こと が できます (ru koto ga dekimasu)

1. Introduction

In Japanese, expressing the ability or possibility to do something is essential for daily communication. The grammar pattern Verb る こと が できます (ru koto ga dekimasu) allows speakers to convey that they can perform a specific action. This pattern translates to "can do [verb]" in English.

2. Core Grammar Explanation

Detailed Explanation

The pattern Verb る こと が できます is used to express:

  • Ability: Indicating that someone can do something.
  • Possibility: Indicating that something is possible.

Meaning

  • Verb る こと が できます → "can [verb]" / "be able to [verb]"

Structure

[Verb Dictionary Form] + ことができます
  • Verb Dictionary Form: The basic form of the verb (ends with "u" sound).
  • ことができます: A phrase meaning "can do" or "be able to."

Formation Diagram

Component Role
食べる (taberu) Verb Dictionary Form
ことができます Indicates ability
食べることができます "can eat" (full expression)

Visual Aids

Verb Conjugation Table

Verb (Dictionary Form) Meaning Verb る こと が できます Meaning
行く (iku) to go 行くことができます (iku koto ga dekimasu) can go
見る (miru) to see 見ることができます (miru koto ga dekimasu) can see
書く (kaku) to write 書くことができます (kaku koto ga dekimasu) can write
話す (hanasu) to speak 話すことができます (hanasu koto ga dekimasu) can speak
来る (kuru) to come 来ることができます (kuru koto ga dekimasu) can come

3. Comparative Analysis

Comparing Verb る こと が できます with the Potential Form of verbs:

Potential Form

  • Structure: Verbs are conjugated into their potential form.
  • Example: 食べる → 食べられる (taberu → taberareru)

Verb る こと が できます

  • Structure: Verb dictionary form + ことができます
  • Example: 食べることができます (taberu koto ga dekimasu) Differences:
  • Formality: ことができます is more formal and polite.
  • Usage: Potential form is commonly used in casual speech.

4. Examples in Context

Sentence Examples

Formal Situations

  1. 私は日本語を話すことができます。
    • Watashi wa Nihongo o hanasu koto ga dekimasu.
    • "I can speak Japanese."
  2. 彼はピアノを弾くことができます。
    • Kare wa piano o hiku koto ga dekimasu.
    • "He can play the piano."
  3. 山に登ることができますか。
    • Yama ni noboru koto ga dekimasu ka.
    • "Can you climb the mountain?"

Informal Situations

  1. 英語を読むことができる。
    • Eigo o yomu koto ga dekiru.
    • "I can read English."
  2. 明日、来ることができる?
    • Ashita, kuru koto ga dekiru?
    • "Can you come tomorrow?"

Written Language

  1. このアプリを使うことができます。
    • Kono apuri o tsukau koto ga dekimasu.
    • "You can use this app."
  2. 図書館で勉強することができます。
    • Toshokan de benkyō suru koto ga dekimasu.
    • "You can study at the library."

5. Cultural Notes

Cultural Relevance

  • Politeness Level: Using ことができます is polite and appropriate for formal situations.
  • Respect for Ability: Emphasizes humility and respect when talking about one's abilities.

Idiomatic Expressions

  1. 参加することができます
    • "Can participate"
    • Commonly used in invitations or event announcements.
  2. 利用することができます
    • "Can use"
    • Frequently seen in instructions or guidelines.

6. Common Mistakes and Tips

Error Analysis

  • Incorrect Verb Form: Using the masu-form instead of the dictionary form.
    • Incorrect: 食べますことができます ❌
    • Correct: 食べることができます ✔️
  • Omitting が: Forgetting the particle in ことができます.
    • Incorrect: 食べることできます ❌
    • Correct: 食べることできます ✔️

Learning Strategies

  • Remember the Structure: Always use the verb in its dictionary form before ことができます.
  • Particle Practice: Practice using particles correctly; is essential in this grammar pattern.
  • Listen and Repeat: Listen to native speakers using the pattern and mimic their intonation.

7. Summary and Review

Key Takeaways

  • Verb る こと が できます expresses ability or possibility.
  • Use the dictionary form of the verb before ことができます.
  • It is a polite and formal way to express "can [verb]."

Quick Recap Quiz

  1. How do you say "I can swim" using this grammar pattern?
    • Answer: 泳ぐことができます。
      • Oyogu koto ga dekimasu.
  2. Identify the error in the sentence: 私は歌いますことができます。
    • Answer: The verb should be in dictionary form.
      • Correct Sentence: 私は歌うことができます。
  3. Translate to Japanese: "Can she understand Japanese?"
    • Answer: 彼女は日本語を理解することができますか。
      • Kanojo wa Nihongo o rikai suru koto ga dekimasu ka.

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