A1 · 初級 チャプター 14

表現がぐっと広がる！魔法の「つなぎ言葉」をマスターしよう

1 トータルルール
5 例文
1 分
このチャプターのルール クイック練習

Chapter in 30 Seconds

Stop speaking in short fragments and start building fluid, natural English sentences today.

  • Combine nouns and verbs using 'and' and 'or'.
  • Express contrast and reasons using 'but' and 'because'.
  • Show results and consequences using the word 'so'.
Connect your thoughts, expand your world.

学べること

こんにちは！英語の基礎を学んできたあなた、次は文章を「つなげる」魔法を身につけましょう。これまでは「I like apples.」のような短い文を一つずつ話していましたが、この章では and, but, or, so, because という5つの大切な言葉を学びます。 これらを使えるようになると、会話が驚くほどスムーズになりますよ。例えば、カフェで「コーヒーか紅茶か（or）」を選んだり、「お腹が空いたから（because）、何か食べたい」と理由を伝えたり……。日常のあらゆるシーンで、自分の考えをより詳しく、自然に伝えられるようになります。 「情報を足す、反対のことを言う、理由を説明する」といった使い分けをマスターすれば、あなたの英語はぐっと大人っぽく、ネイティブに近い響きに変わります。難しい文法ではありませんので、安心してくださいね。この章が終わる頃には、自分の気持ちを一つの長い文章でスラスラと言えるようになりますよ！さあ、一緒に楽しくステップアップしていきましょう！

Learning Objectives

By the end of this chapter, you will be able to:

  1. 1
    By the end you will be able to join two related ideas using the five most common English conjunctions.

重要な例文 (2)

1

I have a dog and a cat.

Conjunctions: And, But, Or, So, Because
2

The film was long but very good.

Conjunctions: And, But, Or, So, Because

ヒントとコツ (1)

💡

Use Commas

Always use a comma before 'but' and 'so' when joining two full sentences.
frontend.learn_grammar.from_rule: Conjunctions: And, But, Or, So, Because

重要な語彙 (7)

and used to join similar things but used to show contrast or used to show a choice so used to show a result because used to show a reason hungry needing food tired needing sleep

Real-World Preview

utensils

At a Restaurant

Review Summary

  • [Idea 1] + conjunction + [Idea 2]

よくある間違い

Confusing 'so' and 'because'. 'Because' explains the reason (why), while 'so' explains the result (what happens).

Wrong: I am hungry because I eat.
正解: I am hungry, so I eat.

Using two conjunctions for the same relationship. In English, you only need one connector per pair of ideas.

Wrong: Because it is hot, so I drink water.
正解: Because it is hot, I drink water. (OR) It is hot, so I drink water.

Forgetting the comma before 'but' when connecting two independent sentences. It helps the reader pause.

Wrong: I like apples but I don't like pears.
正解: I like apples, but I don't like pears.

Next Steps

You're doing great! Connecting sentences is a huge step toward sounding like a fluent speaker. Keep practicing these five little words.

Sentence Combining

Continue to: 「私のもの」と「好き」を伝えよう：持ち物と気持ちの表現

クイック練習 (5)

Fill in the blank.

I like tea ___ coffee.

✓ Correct! ✗ Not quite. Correct answer: and
Addition.

frontend.learn_grammar.from_rule: Conjunctions: And, But, Or, So, Because

Choose the correct word.

I studied hard, ___ I failed.

✓ Correct! ✗ Not quite. Correct answer: but
Contrast.

frontend.learn_grammar.from_rule: Conjunctions: And, But, Or, So, Because

Fix the sentence.

Find and fix the mistake:

I am tired because so I sleep.

✓ Correct! ✗ Not quite. Correct answer: I am tired, so I sleep.
Don't use both.

frontend.learn_grammar.from_rule: Conjunctions: And, But, Or, So, Because

Choose the correct word.

It is cold, ___ I will wear a coat.

✓ Correct! ✗ Not quite. Correct answer: so
Result.

frontend.learn_grammar.from_rule: Conjunctions: And, But, Or, So, Because

Fill in the blank.

Do you want cake ___ ice cream?

✓ Correct! ✗ Not quite. Correct answer: or
Choice.

frontend.learn_grammar.from_rule: Conjunctions: And, But, Or, So, Because

Score: /5

よくある質問 (2)

Yes, in informal English it is very common to start a sentence with 'And' to continue a story.
Yes, it is a subordinating conjunction used to show reason.
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Describing People and Things
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「私のもの」と「好き」を伝えよう：持ち物と気持ちの表現
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