Introduction

英会話で自然に話すために、接続詞を使った節が欠かせません。このブログでは、if節からalthough節まで8種類の接続詞ごとに、意味・5つの基本フレーズ・4行対話例を日英併記でまとめました。日常会話やビジネスシーンで即活用できる内容です。

Conjunction clauses are key to sounding natural in English conversations. This post details 8 types from if to although clauses, including meanings, 5 phrases each, and 4-line dialogues with Japanese-English pairs. Ideal for daily chats or business. ​

if Clause (Condition: If ~ then)

1. もしあなたがよければ、私はそれをします
   If you are okay, I’ll do that.
2. もし明日雨が降ったら、家にいます
   If it rains tomorrow, we will stay home.
3. もしよければ、手伝ってもらえますか？
   If you don’t mind, could you help me?
4. もし可能なら、今日までにレポートを送ってください
   If possible, please send me the report by today.
5. もし時間があれば、コーヒーでも飲みましょう
   If you are available, let’s meet for coffee.

Dialogue Example
A: 明日は忙しい？ (Busy tomorrow?)
B: もし空いてるなら、映画に行こうよ。 (If you’re free, let’s go to a movie.)
A: いいね！ (Sounds good!)
B: じゃあ、時間を決めよう。 (Then let’s set a time.)​

after Clause (~ After doing)

1. 仕事が終わった後、家に帰りました
   After I finished work, I went home.
2. 出かけるときは、ドアに鍵をかけてください
   After you leave, please lock the door.
3. 夕食を食べた後、映画を見ます
   After we eat dinner, we’ll watch a movie.
4. 宿題を終えたら、遊んでいいよ
   After you finish your homework, you can play.
5. 彼女が到着した後、会議が始まりました
   After she arrived, the meeting started.

Dialogue Example
A: 夕食の後、何する？ (What after dinner?)
B: 仕事が終わった後、散歩しよう。 (After work, let’s walk.)
A: 了解！ (Got it!)
B: 楽しみだね。 (Looking forward to it.)​

as Clause (Reason/Simultaneous: Because ~, While ~)

1. 雨が降っていたので、私たちは中にいました
   As it was raining, we stayed inside.
2. ご存知のように、締め切りは明日です
   As you know, the deadline is tomorrow.
3. 出かけようとしていたときに電話が鳴りました
   As I was leaving, the phone rang.
4. 先生が言ったように、これは重要です
   As the teacher said, this is important.
5. 今日は忙しいので、会議に参加できません
   As I’m busy today, I can’t join the meeting.

Dialogue Example
A: 遅れたの？ (You’re late?)
B: 雨が降っていたので、電車が遅れたよ。 (As it was raining, the train was late.)
A: 大変だったね。 (That must’ve been tough.)
B: 次は早めに出るよ。 (I’ll leave earlier next time.)​

before Clause (~ Before doing)

1. 出かける前に、電気を消してください
   Before you go, please turn off the lights.
2. 朝食の前に、メールをチェックします
   Before I eat breakfast, I check my emails.
3. 会議が始まる前に、議題を確認しましょう
   Before the meeting starts, let’s review the agenda.
4. 彼女が出かける前に、さよならを言いました
   Before she left, she said goodbye.
5. 答える前に、よく考えてください
   Before you answer, think carefully.

Dialogue Example
A: 出かける？ (Heading out?)
B: 出かける前に、荷物を確認して。 (Before you go, check your bag.)
A: わかった。 (Okay.)
B: 気を付けてね。 (Be safe.)​

because Clause (Reason: Because ~)

1. 病気だったので家にいました
   I stayed home because I was sick.
2. 寒かったのでコートを着ました
   Because it was cold, I wore a coat.
3. 助けてくれたので早く終わりました
   Because you helped me, I finished early.
4. 雨が降っているのでピクニックを中止しました
   Because it’s raining, we canceled the picnic.
5. 相談が必要だったので電話しました
   I called you because I needed advice.

Dialogue Example
A: 今日は休み？ (Off today?)
B: 病気だったから休んだよ。 (Because I was sick.)
A: お大事に。 (Get well soon.)
B: ありがとう。 (Thanks.)​

while Clause (Simultaneous/Contrast: While ~, Although ~)

1. あなたが勉強している間に、私は夕食を作っていました
   I was cooking dinner while you were studying.
2. 雨が降っている間、私たちは室内にいました
   While it was raining, we stayed indoors.
3. 彼女はプロジェクトを進めながら音楽を聞いていました
   She listened to music while working on her project.
4. コーヒーは好きですが、朝は紅茶の方が好きです
   While I like coffee, I prefer tea in the morning.
5. 彼は朝食を食べながら本を読んでいました
   He was reading a book while eating breakfast.

Dialogue Example
A: 何してたの？ (What were you doing?)
B: 勉強してる間に、音楽聞いてたよ。 (While studying, listening to music.)
A: 集中できるね。 (Good focus.)
B: そうなんだ。 (Yeah.)​

until Clause (Until ~)

1. このメールを終えるまで待ってください
   Wait until I finish this email.
2. あなたが到着するまで行きません
   I won’t leave until you arrive.
3. 試験が終わるまで一生懸命勉強してください
   Study hard until the exam is over.
4. お店は午後9時まで開いています
   The store stays open until 9 PM.
5. 夕食ができるまで食べないで
   Don’t eat until dinner is ready.

Dialogue Example
A: 今行こうか？ (Go now?)
B: 友達が来るまで待とう。 (Wait until my friend arrives.)
A: OK。 (OK.)
B: もう少しだよ。 (Almost.)​

although Clause (Concession: Although ~)

1. 雨が降っていましたが、私たちは外に出ました
   Although it was raining, we went out.
2. 彼女は難しい人ですが好きです
   I like her although she can be difficult.
3. 疲れていましたが、彼は働き続けました
   Although tired, he kept working.
4. あまり勉強しなかったのに、彼女はテストに合格しました
   She passed the test although she didn’t study much.
5. 忙しいですが、手伝います
   Although busy, I’ll help you.

Dialogue Example
A: 疲れてるのに仕事？ (Working despite tired?)
B: 忙しいけど、終わらせないと。 (Although busy, I have to finish.)
A: がんばれ！ (Good luck!)
B: ありがとう。 (Thanks.)​

Conclusion

これらの接続詞フレーズと対話を練習すれば、英会話の流れがスムーズに！日常からビジネスまで対応可能。コメントで活用例をシェアしてください。関連記事：英語接続詞一覧、英会話上達法。シェア・ブックマークお願いします！

Practice these conjunction phrases and dialogues for fluent English flow! Suitable for daily to business use. Share examples in comments. Related: Full conjunction lists, conversation improvement tips. Share and bookmark!​

50 Essential Conjunctive Clause Phrases for English Conversation

Conditional Clauses (if, unless, in case)

1. If it rains tomorrow, we’ll stay home.
2. If you need help, just let me know.
3. If I were you, I’d take that job offer.
4. Unless you hurry, we’ll miss the train.
5. In case you get lost, here’s my phone number.
6. If you don’t mind, I’d like to ask a question.
7. If that’s okay with you, let’s meet at 3 PM.
8. Unless I’m mistaken, the meeting is next Tuesday.

Causal Clauses (because, since, as)

9. Because it was cold, I wore a jacket.
10. Since you’re already here, would you like some coffee?
11. As I mentioned earlier, the deadline is Friday.
12. Because of the traffic, I arrived late.
13. Since we have time, let’s grab lunch.
14. As you know, this project is important.
15. Because I forgot my wallet, can you pay this time?
16. Since it’s your birthday, dinner is on me.

Contrast Clauses (although, though, even though, while, whereas)

17. Although it was expensive, it was worth it.
18. Though I’m tired, I’ll finish this today.
19. Even though I studied hard, I failed the test.
20. While I like coffee, I prefer tea.
21. Whereas my brother is outgoing, I’m more introverted.
22. Although I don’t usually, I’ll make an exception.
23. Even though it’s late, let’s keep going.
24. While that’s true, we need to consider other options.

Time Clauses (when, while, before, after, as soon as, until)

25. When I get home, I’ll call you.
26. While you were out, someone called for you.
27. Before you leave, please lock the door.
28. After we finish, let’s celebrate.
29. As soon as I hear back, I’ll let you know.
30. Until you try it, you won’t know if you like it.
31. When you have a moment, can we talk?
32. After I graduate, I want to travel.

Purpose Clauses (so that, in order to)

33. So that we don’t forget, let’s write it down.
34. In order to improve, you need to practice daily.
35. So that everyone can hear, please speak up.
36. In order to save time, let’s take a taxi.

Result Clauses (so…that, such…that)

37. It was so good that I had seconds.
38. She was so tired that she fell asleep immediately.
39. It’s such a beautiful day that we should go outside.
40. He spoke so quickly that I couldn’t understand.

Manner Clauses (as, as if, as though)

41. As I expected, the meeting ran late.
42. As if nothing happened, he continued talking.
43. As though she knew, she prepared everything in advance.
44. As we discussed, here are the next steps.

Additional Useful Phrases

45. Now that you mention it, I do remember that.
46. Whenever you’re ready, we can start.
47. Whether you like it or not, we have to do this.
48. As long as you’re careful, you’ll be fine.
49. Once you understand the basics, everything gets easier.
50. Every time I see him, he’s wearing that same jacket.

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Tips for Using These Phrases

• These conjunctions connect ideas and make your English sound more natural and fluent
• Practice using them in different contexts to become comfortable
• Pay attention to comma placement (usually after the dependent clause when it comes first)
• Listen for these patterns in conversations, movies, and TV shows