Mastering Referencing: This, That, It, One, Ones, and More (C1 English Grammar) — C1 English grammar lesson by Langcom

Mastering Referencing: This, That, It, One, Ones, and More (C1 English Grammar)

ラウル・マグイニャ

Langcom 創設者 | ケンブリッジおよびSIELE試験の試験官

9月 17, 2026

C1✏️ 文法⏱️ 7 min read📅 Updated 9月 2026
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Referencing is a crucial C1 English skill that helps you avoid repetition and make your writing and speaking sound more natural and sophisticated. It involves using shorter words or phrases to refer back to something already mentioned (or sometimes forward to something about to be mentioned). This technique creates cohesion, linking ideas smoothly without repeating full nouns, concepts, or verb phrases. Mastering referencing allows you to express complex ideas clearly and concisely, which is essential for academic writing, professional communication, and advanced conversations. You will learn to use pronouns like this, that, it, one, 、および ones, as well as auxiliary verbs and phrases like the same, to achieve this fluency.

Why is Referencing Important in English?

Good referencing is a hallmark of advanced English. It shows you can connect ideas logically and efficiently.

  • It makes your writing clearer and easier to read.
  • It helps your sentences flow smoothly, creating a more natural rhythm.
  • It demonstrates a higher level of linguistic control and sophistication.
  • It is vital for academic and professional contexts where precision and conciseness are valued.

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How Do We Use 'This' and 'That' for Referencing?

This そして that are powerful tools for referring to ideas, situations, or entire clauses, not just single nouns.

  • 当社では this to refer to something recently mentioned or something that is psychologically 'closer' to the speaker/writer. It often introduces a consequence or reaction to the previous statement. For example: The company announced record profits. This led to a surge in stock prices.
  • 当社では that to refer to something mentioned earlier, or something more general or distant in context. It can also imply a shared understanding. For example: Many people are working from home now. That has changed the way we commute.
  • Both can be used with a noun (this problem, that idea) or stand alone as pronouns.

When Should You Use 'It' for Referencing?

It is one of the most versatile referencing words in English, used in several ways at C1 level.

  • Referring to a specific noun: If the noun is clear from the context, it replaces a singular, non-human noun. For example: I bought a new book. It's very interesting.
  • Referring to a general statement or situation: It can stand for a whole idea or fact. For example: He failed the exam. It was very disappointing.
  • As an anticipatory or 'dummy' subject: It often introduces a clause, especially with adjectives or verbs of opinion. For example: It's important to study regularly. (ここでは、, it refers forward to to study regularly).
  • In impersonal expressions: For time, weather, distance. For example: It's raining. It's 5 o'clock.

How Do 'One' and 'Ones' Help Avoid Repetition?

One そして ones are used to replace countable nouns, especially when you are talking about a type of thing or making a choice.

  • 当社では one for singular countable nouns. For example: I need a new phone. I want a fast one. (meaning 'a fast phone').
  • 当社では ones for plural countable nouns. For example: These shoes are old. I need new ones. (meaning 'new shoes').
  • They are often used after adjectives or in phrases like the one(s) that... または which one(s). For example: Which car do you prefer? The red one.

Referencing Actions with Auxiliary Verbs and 'The Same'

To avoid repeating entire verb phrases, we can use auxiliary verbs or the phrase the same.

  • Auxiliary verbs: 当社では do, be, 、または have (in the correct tense) to stand in for a previously mentioned verb phrase. For example: She loves to travel, and I do too. (meaning 'I love to travel too'). They haven't finished the report, but he has. (meaning 'he has finished the report').
  • The same: This phrase can refer to a previously mentioned action or state. For example: He decided to quit his job. His sister did the same. (meaning 'his sister also decided to quit her job').
  • Similar + noun: Sometimes we use similar followed by a noun to refer to a type of thing or result. For example: Standing desks improve focus. Treadmill desks offer similar benefits.
Summary of Key Referencing Devices (C1)
Referencing Device Primary Use
This Refers to a recent idea, situation, or a whole clause (closer) The project was successful. This proves our strategy works.
That Refers to an earlier, more general idea, situation, or a whole clause (more distant) He resigned last month. That was unexpected.
It Refers to a specific singular noun, a general statement, or as an anticipatory subject I read the report; it was insightful. It's crucial to act now.
One / Ones Replaces countable nouns to avoid repetition, often after adjectives or for types/choices I prefer the red one. These old chairs need new ones.
Auxiliary verbs (do, be, have) Replaces a full verb phrase to avoid repetition, matching original tense/aspect She can sing, and I can too. They haven't seen it, but we have.
The same Refers to a previously mentioned action or situation, emphasizing identity He complained about the service. I did the same.

  • The government introduced new environmental policies. This was met with public approval.
  • Many students struggle with time management. That is a common challenge.
  • I found a great article online. It explains the topic perfectly.
  • It's vital to consider all perspectives before making a decision.
  • Do you prefer the blue jacket or the black one?
  • These old files need to be archived. We should get some new ones.
  • She said she would help, and she did.
  • They haven't visited the new museum yet, but I have.
  • The team developed a new marketing strategy. Competitors tried to do the same.

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Spanish speakers often encounter specific challenges when mastering English referencing:

  • Confusing it そして one: In Spanish, 'uno' can be used more broadly. Remember, it refers to a specific, identifiable thing or idea, while one replaces a countable noun when you're talking about a type or choice. For example, don't say: I need a new car. I want an expensive it. (Incorrect) Say: I need a new car. I want an expensive one. (Correct)
  • 使いすぎ it for broad ideas: 一方で it can refer to general statements, this または that are often more appropriate for referring to entire preceding clauses or complex situations. For example, instead of: The economy is struggling. It is a major concern. (Acceptable, but less precise) Consider: The economy is struggling. This is a major concern. (More precise, referring to the whole situation).
  • Incorrect auxiliary verb tense: When replacing verb phrases, ensure the auxiliary verb matches the tense and aspect of the original verb. Don't say: She studied hard, and I have too. (Incorrect tense match) Say: She studied hard, and I did too. (Correct)

よくある質問

What is the main purpose of referencing in English?

The main purpose of referencing is to avoid unnecessary repetition of words, phrases, or ideas, making your communication more concise, clear, and cohesive. It helps your text flow naturally.

Can 'this' and 'that' refer to people?

Generally, this そして that as pronouns refer to things, ideas, or situations. When referring to people, we typically use he, she, they, 、または who. However, in informal speech, you might hear This is John when introducing someone.

Is 'it' always singular?

Yes, the pronoun it is always singular. Its plural form is they または them when referring to specific nouns. However, when it is used as a 'dummy' subject (e.g., It's important...), it doesn't have a plural form in that context.

When should I use 'the same' instead of an auxiliary verb?

You use the same when you want to emphasize that an action or situation is identical to a previously mentioned one. Auxiliary verbs simply replace the verb phrase. For example: He left early, and I did too. (simple replacement) vs. He left early, and I did the same. (emphasizes the identical action).

著者について:ラウル・マグイニャ

ラウル・マグイニャ氏は、認定Cambridge English試験対策センターである「Asociación Educativa Langcom」の所長であり、 あなたの国. 。語学教育および国際資格認定の分野で10年以上の経験を持ち、25カ国にわたる数千人の学生、教師、教育機関が、ケンブリッジ英語検定、IELTS、TOEFL、およびMichiganの英語資格を取得できるよう支援してきました。.

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