C1 Verb Moods 12 min read ふつう

条件: '〜する限り' (期間と条件)

「as long as」は、上級者として「微妙な条件」や「期間」をプロのように表現するための魔法のチケットだよ!

Grammar Rule in 30 Seconds

'As long as' sets a condition that must remain true for a specific result to continue happening.

  • Use it to mean 'if' or 'provided that' with an emphasis on duration: 'As long as you stay, I'm happy.'
  • Do not use 'will' immediately after 'as long as' for future conditions: 'As long as it rains (not will rain).'
  • Use 'so long as' for a slightly more formal or emphatic tone in professional writing.
Condition (Present) + ⏳ + Result (Future/Present)

Overview

### Overview
英語学習において、C1レベル(上級)に到達した皆さんが次に目指すべきは、単に「意味が通じる」ことではなく、文脈に応じた「精密なニュアンスの使い分け」です。今回取り上げる as long as は、初級・中級で学んだ if(もし〜なら)の進化系とも言える表現ですが、単なる条件設定を超えた「期間(Duration)」と「強い限定条件(Condition)」を同時に表現する非常にパワフルなツールです。
日本語を母国語とする私たちにとって、as long as は「〜である限り」や「〜さえすれば」と訳されることが多いですが、その本質は「主節の事柄が成立するための『境界線』を引き、その範囲内であればずっと有効である」という持続的な依存関係にあります。例えば、ビジネス契約、法的な許可、あるいは友人同士の固い約束など、条件が継続している間だけ結果が保証されるような、高い論理性が求められる場面で頻繁に使われます。
なぜこれが上級者にとって重要なのでしょうか。それは、if が一回限りの出来事や単純な仮定を示すのに対し、as long as は「その状態が続く限り」という時間軸の概念を導入するからです。この微細な違いをマスターすることで、あなたの英語はより知的で、説得力のあるものへと洗練されます。この記事では、日本人学習者が陥りやすい落とし穴を回避しながら、as long as の真髄を深く掘り下げていきましょう。
### How This Grammar Works
as long as は、文法的には「従属接続詞(subordinating conjunction)」として機能します。つまり、メインとなる「主節」と、条件や期間を提示する「従属節」を繋ぐ役割を果たします。日本語の構造と比較すると、その仕組みがより明確になります。
日本語では「あなたがここにいる限り、私は安心です」と言いますね。この「〜する限り」という表現は、以下の2つの要素を含んでいます。
  1. 1条件:ここにいること(Condition)
  2. 2期間:ここにいる間はずっと(Duration)
英語の as long as も全く同じ論理構造を持っています。I feel safe as long as you are here. という文では、as long as 以下の節が、主節の I feel safe(安心である)という状態が成立するための「有効期限」と「必須条件」を定義しているのです。
#### 日本語の「は」と「が」の感覚との比較
日本語のトピック提示(は)に近い感覚で捉えることもできます。「(他のことはともかく)この条件が満たされている限り、結果はこうなる」という、特定の範囲を強調するニュアンスです。英語は語順の言語(SVO)であり、日本語のように助詞(は、が、を)で役割を決めませんが、as long as を使うことで、文全体に「条件の限定」という強力なマーカーを置くことができるのです。
また、as long as は「動的な依存関係」を生み出します。条件節の内容が真(True)である間は、主節も真となりますが、条件が偽(False)になった瞬間に、主節の効力も失われます。この「オン・オフ」が明確に切り替わる感覚こそが、上級者が身につけるべきネイティブの直感です。
### Formation Pattern
as long as の構成は非常にシンプルですが、時制(Tense)の扱いには厳格なルールがあります。これは if 節や when 節と同様のルールですが、上級者でも油断すると間違えやすいポイントです。
#### 基本構造
  1. 1[主節] + as long as + [従属節(条件・期間)]
  • We can stay outside as long as the sun is up.(太陽が出ている限り、外にいられる。)
  • ※主節の後に置く場合、カンマは不要です。
  1. 1As long as + [従属節(条件・期間)] + [,] + [主節]
  • As long as the sun is up, we can stay outside.
  • ※文頭に置く場合は、主節の前に必ずカンマ(,)を置きます。これは日本語の「〜である限り、」という読点と同じ役割です。
#### 時制のルール(最重要)
未来のことを話す場合でも、as long as 節の中では 「現在形」 を使用します。これは、条件節が「未来の出来事」ではなく、主節が成立するための「前提条件(プラットフォーム)」として提示されるからです。
| 文脈 | as long as 節(従属節) | 主節(結果・状況) | 例文 |
|:---|:---|:---|:---|
| 未来の条件 | 現在形 (Simple Present) | 未来形 (will) / 助動詞 (can等) | As long as you *keep* practicing, you *will* improve. |
| 不変の真理・習慣 | 現在形 | 現在形 | As long as there *is* oxygen, fire *burns*. |
| 過去の状況 | 過去形 | 過去形 / would | He was happy as long as he *had* a book to read. |
| 進行中の条件 | 現在進行形 | 現在形 / 未来形 | As long as it *is raining*, we *stay* indoors. |
注意: 未来のことだからといって As long as it *will* rain... とは言いません。これは日本の学校教育でも強調される「時や条件を表す副詞節」のルールですが、実際の会話(スピーキング)では will を入れてしまうミスが多発します。C1レベルでは、ここを無意識に正しく使えることが求められます。
### When To Use It
as long as を使うべき主要な5つのシナリオを見ていきましょう。単なる if よりも「限定的」で「持続的」なニュアンスが必要な場面です。
#### 1. 必須条件や前提条件を提示する(Prerequisites)
ある結果を得るために、これだけは譲れないという強い条件を出す時に使います。ビジネスの交渉や契約で非常に役立ちます。
  • We will sign the contract as long as the delivery date is guaranteed.
(納期が保証される限り、契約書にサインします。)
  • 日本語の「〜という条件なら」に近いですが、より「その条件が満たされている間は有効」という継続性が意識されます。
#### 2. 期間の限定を強調する(Duration)
「〜している間はずっと」という意味合いを強く持たせたい場合です。
  • You can keep the car as long as you need it.
(必要である限り、その車をずっと持っていていいですよ。)
  • ここでは if you need it と言うよりも、「必要な期間」に焦点が当たっています。
#### 3. 条件付きの許可を与える(Permission with Caveats)
「〜しさえすれば、いいですよ」という、少し寛容ながらも一線を画す表現です。親が子供に、あるいは上司が部下に許可を与える際によく使われます。
  • You can go to the party as long as you come home by midnight.
(夜中までに帰ってくるなら、パーティーに行ってもいいよ。)
  • 日本語の「〜さえすれば」というニュアンスに最も近い使い方です。
#### 4. 一般的な原理や法則を述べる(General Principles)
ある状態が続く限り、必然的にこうなるという論理的な帰結を述べる際に使います。
  • As long as there is demand, prices will remain high.
(需要がある限り、価格は高いままでしょう。)
#### 5. 交渉や合意形成(Negotiation)
相手の提案に対して、自分の条件をカウンターとして出す際に非常に有効です。
  • I'm happy to help you with the report as long as you provide the data by Friday.
(金曜日までにデータを提供してくれるなら、喜んでレポート作成を手伝いますよ。)
### Common Mistakes
日本人学習者が特につまずきやすいポイントを3つ挙げます。これらは日本語の干渉(L1 interference)によって起こる典型的なミスです。
#### 1. as soon as との混同
これは音の響きが似ているために起こる、非常に多いミスです。しかし、意味は正反対と言ってもいいほど異なります。
  • 間違い: As long as I arrive at the station, I will call you.
  • 正解: As soon as I arrive at the station, I will call you.
  • 解説: as soon as は「〜するとすぐに」という 点(瞬間) を表します。一方、as long as線(期間・条件) です。「駅に着いている限り電話する」というのは論理的に不自然ですね。日本語で「〜したら」と訳してしまうと、両者の区別がつかなくなるため、「〜の間ずっと」なのか「〜した瞬間」なのかを意識しましょう。
#### 2. 条件節内での will の使用
前述の通り、未来の条件であっても as long as の中では現在形を使います。
  • 間違い: As long as you *will* be quiet, you can stay here.
  • 正解: As long as you *are* quiet, you can stay here.
  • 理由: 日本語では「静かにするつもりなら」のように意志を含めて考えるため、will を入れたくなりますが、英語では「静かであるという状態」を単なる条件の枠組みとして捉えるため、現在形が適切です。
#### 3. if との無差別な置き換え
as long asif よりも強調的で、持続性を伴います。単なる仮定には if を使うのが自然です。
  • 不自然: As long as it rains tomorrow, I'll stay home.
  • 自然: If it rains tomorrow, I'll stay home.
  • 解説: 明日雨が降るかどうかは一回性の出来事であり、その「期間」を強調する必要は通常ありません。逆に、As long as it continues to rain, we can't play tennis.(雨が降り続いている間は、テニスができない)であれば、雨という状態の継続が重要なので as long as が最適です。
### Contrast With Similar Patterns
似た意味を持つ他の表現との違いを理解することで、C1レベルの正確な使い分けが可能になります。
| 表現 | フォーマル度 | ニュアンスの違い | 日本語イメージ |
|:---|:---|:---|:---|
| as long as | 中立〜ややカジュアル | 「〜である限り」期間と条件の両方。 | 〜である限りは |
| so long as | 中立〜ややカジュアル | as long as とほぼ同じだが、より条件(if)のニュアンスが強い。 | 〜でありさえすれば |
| provided that | フォーマル | 契約書や公的な文書で使われる「強い条件」。 | 〜という条件で |
| providing that | フォーマル | provided that と同様だが、少しだけ口語的。 | 〜という条件があれば |
| on condition that | 非常にフォーマル | 非常に厳格な、一つだけの特定の条件を指す。 | 〜を条件として |
| unless | 中立 | 「〜でない限り」。if not の強調版。 | 〜でない限りは |
#### as long as vs provided that の使い分け例
  • 日常会話: You can borrow my laptop as long as you're careful.
  • ビジネス契約: The licensee may use the software provided that the annual fee is paid.
このように、相手との関係性や文書の性質によって、as long as から provided that へとシフトさせるのがプロフェッショナルな英語です。
### Quick FAQ
Q1: so long asas long as に明確な違いはありますか?
A1: 実質的な意味の違いはありません。どちらも入れ替え可能です。ただし、伝統的な文法では so long as は否定文や、より「条件」を強調する際に好まれる傾向がありましたが、現代英語では as long as の方が圧倒的に一般的です。迷ったら as long as を使えば間違いありません。
Q2: 否定文でも使えますか?
A2: はい、使えます。As long as you don't break the rules, you'll be fine.(ルールを破らない限り、大丈夫です。)のように、「〜しない限りはずっと」という継続的な否定条件を示すことができます。
Q3: as long as を「〜と同じくらい長い」という物理的な長さの比較で使う場合と、どう見分ければいいですか?
A3: 文脈で判断します。This rope is as long as that one. であれば、後ろに名詞(句)が来ており、物理的な比較です。一方、今回学んだ接続詞の as long as は、後ろに「主語 + 動詞」の節が来ます。構造を見れば一目瞭然です。
Q4: なぜ as long as は「〜さえすれば」と訳されることがあるのですか?
A4: それは as long as が「その条件さえ満たされていれば、他は問わない」という排他的なニュアンスを持つことがあるからです。例えば、I don't care about the price as long as the quality is good.(品質が良ければ、価格は気にしない)という文では、品質が唯一の重要な境界線になっているため、「〜さえすれば」という日本語がしっくりくるのです。
---
### 最後に:学習のアドバイス
as long as を使いこなすコツは、頭の中に「境界線」を描くことです。その線の中にいる間は、主節の魔法が効いている。その線から出た瞬間に、魔法が解ける。このイメージを、日々のリーディングやリスニングで見つけてみてください。特にビジネスニュースや、交渉シーンのあるドラマ(『Suits』など)では、この表現がどれほど戦略的に使われているかに気づくはずです。
C1レベルの皆さんは、すでに多くの語彙をお持ちです。これからは、こうした接続詞一つひとつが持つ「論理の重み」を感じ取りながら、自分の言葉として定着させていってください。頑張りましょう(努力は必ず報われます!)。

Structure of 'As Long As' Clauses

Clause Type Tense Used Example Meaning
Main Clause (Future)
Future (will)
I will help you...
The result
Conditional Clause
Present Simple
...as long as you ask.
The requirement
Main Clause (Present)
Present Simple
It works...
General truth
Conditional Clause
Present Simple
...as long as you plug it in.
General condition
Main Clause (Past)
Past Simple
He stayed...
Past duration
Conditional Clause
Past Simple
...as long as he could.
Past limit

Meanings

A conjunction used to express that one thing will happen only if another thing happens or continues to be true.

1

Pure Condition

Equivalent to 'if' or 'on the condition that'.

“As long as you're happy, I'm happy.”

“We can go outside as long as it doesn't rain.”

2

Duration-Based Condition

Emphasizing the length of time a condition remains valid.

“I will remember this day as long as I live.”

“The battery will last as long as you don't use the flashlight.”

3

Formal Proviso

Used in legal or professional contexts to state requirements.

“The contract is valid as long as both parties adhere to the terms.”

“You may remain in the country as long as your visa is valid.”

Reference Table

Reference table for 条件: '〜する限り' (期間と条件)
機能 構造 Example ニュアンス
条件設定
Main Clause + `as long as` + Present Simple
You can go `as long as` you finish your homework.
Only if; provided that
期間の表現
Main Clause + `as long as` + Present Simple/Continuous
We'll be fine `as long as` the internet works.
For the entire time that
許可を与える
`As long as` + Present Simple + , + Main Clause
`As long as` you pay, you can use my account.
With the sole condition
一般的な真実
Main Clause + `as long as` + Present Simple
She's happy `as long as` she has coffee.
Under these circumstances

フォーマル度スペクトル

フォーマル
You may remain on the premises so long as you adhere to the safety protocols.

You may remain on the premises so long as you adhere to the safety protocols. (Security/Social)

ニュートラル
You can stay here as long as you follow the rules.

You can stay here as long as you follow the rules. (Security/Social)

カジュアル
You can hang out as long as you're cool.

You can hang out as long as you're cool. (Security/Social)

スラング
You're good to chill here as long as you don't act up.

You're good to chill here as long as you don't act up. (Security/Social)

「As Long As」:コンセプトマップ

AS LONG AS

機能

  • Condition Only if
  • Duration For the entire time that
  • Permission Granted on condition

構造

  • Clause Order Main + As Long As + Subordinate
  • Tense (Future) Present Simple in 'As Long As' clause
  • Comma Use After 'As Long As' when starting sentence

類似表現

  • Provided that More formal condition
  • So long as Interchangeable

混同を避ける

  • As soon as Refers to immediacy
  • If (basic) Lacks duration/strong condition

「As Long As」と関連する条件表現の比較

As Long As
You can leave as long as your work is done. 条件+期間
As long as I have coffee, I'm happy. ~の場合に限り(継続的)
If
If you finish your work, you can leave. 一般的な条件
If I have coffee, I'm happy. 単純な条件
Provided That
You can leave, provided that your work is done. フォーマルな条件
Provided that I have coffee, I'm happy. フォーマルな「~の場合に限り」
As Soon As
As soon as your work is done, you can leave. 即時性/時間
As soon as I have coffee, I'm happy. 即時の結果

「As Long As」を使うタイミング

1

満たされるべき条件を述べていますか?

YES
次のステップへ
NO
「If」や他の条件表現を検討してください。
2

この条件は期間(~の間ずっと)も暗示していますか?

YES
「As long as」を使いましょう。例:「As long as it's safe, we can explore.」
NO
もし単に「~の場合に限り」や「~という条件で」という強い条件であれば、「As long as」は依然として良い選択です。期間を伴わない単純な条件であれば、「If」の方が良いかもしれません。
3

その条件は未来の出来事についてですか?

YES
「as long as」節では現在形を使いましょう。例:「You'll pass as long as you study.」
NO
一般的な真実や過去の出来事には適切な時制を使いましょう。

「As Long As」を使う状況

許可

  • 車を借りる
  • ゲームに参加する
  • リソースを使う
🤝

約束/合意

  • 決定を支持する
  • お金を貸す
  • 費用を負担する
🔄

継続中の状況

  • サブスクリプションの有効性
  • リモートワーク
  • どこかに滞在する
💡

アドバイス/警告

  • 勉強の継続性
  • 安全運転
  • 健康的な食事

レベル別の例文

1

You can eat as long as you wash your hands.

You can eat if you wash your hands.

2

I am happy as long as you are happy.

I am happy if you are happy.

3

We can play as long as it is sunny.

We can play if it is sunny.

4

You can stay as long as you like.

You can stay for the time you want.

1

I will help you as long as you try your best.

I will help you on the condition that you try.

2

As long as he works hard, he will pass.

If he works hard, he will pass.

3

You can watch TV as long as you finish your homework.

You can watch TV if you finish homework.

4

The dog is good as long as he has a bone.

The dog is good while he has a bone.

1

You can borrow the car as long as you fill the tank.

I'll lend the car provided you buy gas.

2

As long as there is coffee, I can keep working.

I can work if I have coffee.

3

We'll go to the beach as long as the weather stays warm.

We will go if the weather remains warm.

4

I don't mind the noise as long as I can sleep.

The noise is okay if I can still sleep.

1

So long as the economy remains stable, we will invest.

Provided the economy is stable, we will invest.

2

You can take the day off as long as your work is completed.

You have permission if your work is done.

3

As long as you don't mention the surprise, everything will be fine.

If you keep the secret, it will be okay.

4

He will be successful as long as he maintains his focus.

Success depends on his continued focus.

1

The ceasefire will hold as long as neither side violates the border.

The peace depends on both sides respecting the border.

2

As long as the fundamental assumptions are correct, the theory stands.

The theory is valid provided the assumptions are true.

3

You may retain the documents as long as they are kept in a secure location.

Possession is conditional on security.

4

As long as we are being honest, I never liked the proposal anyway.

Since we are speaking truthfully...

1

The monarchy's relevance persists only as long as it adapts to modern sensibilities.

Survival depends on adaptation.

2

As long as there is a shred of evidence, the investigators will not rest.

They will continue while evidence exists.

3

The contract remains enforceable so long as the 'force majeure' clause is not invoked.

Legal validity depends on specific conditions.

4

As long as we're on the subject, could you clarify your earlier point?

While we are discussing this...

間違えやすい

Conditional: 'As long as' (Duration & Condition) As long as vs. Until

Learners use 'as long as' to mean the end of a period.

Conditional: 'As long as' (Duration & Condition) As long as vs. While

Both involve time, but 'while' is purely temporal.

よくある間違い

I stay as long as you stay.

I will stay as long as you stay.

In A1, learners often forget the 'will' in the main clause for future plans.

As long as it will rain, we stay home.

As long as it rains, we stay home.

Using 'will' in the conditional clause is a classic error.

I'll wait as long as he comes.

I'll wait until he comes.

Confusing 'as long as' (duration) with 'until' (end point).

The contract is valid as long as you will pay.

The contract is valid as long as you pay.

Even advanced learners slip up with 'will' in formal provisos.

文型パターン

I don't mind ___, as long as ___.

As long as ___, the ___ will ___.

Real World Usage

Job Interview very common

I am willing to travel as long as the expenses are covered.

Parenting constant

You can go out as long as you're home by ten.

Software Terms common

This license is free as long as it is for non-commercial use.

Travel occasional

The tour is on as long as we have at least five people.

Romance common

I'll love you as long as I live.

Sports common

We have a chance as long as the clock is running.

💡

「Only If」や「Provided」に置き換えて考えてみよう

「as long as」を使うべきか迷ったら、心の中で「only if」や「provided that」に置き換えてみて。もし文が自然で、伝えたいニュアンスが合っているなら、正解だよ。「If you're unsure if 'as long as' fits, try replacing it mentally with 'only if' or 'provided that'.」
⚠️

「As Long As」節では未来形を避ける

よくある落とし穴だよ!たとえ未来の条件について話す時でも、「as long as」の節の中では現在形を使うんだ。未来形は「メインの節」の結果を表すために使うものだからね。「Even when referring to a future condition, use the present simple in the 'as long as' clause.」
🎯

「So Long As」でバリエーションをつけよう

ちょっとおしゃれに言いたい?「as long as」は「so long as」に置き換えることができるよ。意味は同じで、特にインフォーマルな場面で微妙なスタイルの違いを出せるんだ。「You can often swap 'as long as' with 'so long as'.」
🌍

交渉で大活躍!

英語圏の文化では、「as long as」は交渉の場で、仕事のオファーでもコーヒー代の支払いでも、明確な境界や条件を設定するためによく使われるんだ。「'As long as' is frequently used in English-speaking cultures to set clear boundaries or conditions in negotiations.」
💡

「期間」と「条件」の二刀流

この二重の性質を覚えておこう。単に条件を述べるだけでなく、その条件が「満たされている間ずっと」状況が「続く」ことや、行動が「許される」ことを示唆することが多いんだ。「It doesn't just state a condition; it often implies that a situation will *continue* or an action will be *permitted* for the *entire time* that condition holds true.」

Smart Tips

Swap 'as long as' for 'provided that' to instantly increase the professional tone.

You can use the room as long as you clean it. You may use the room provided that it is left in a clean state.

Check if you can replace 'as long as' with 'if'. If you can, the 'no will' rule definitely applies.

As long as it will be sunny... As long as it is sunny...

Use 'as long as' for the condition and 'until' for the deadline to show you understand the difference.

I'll stay as long as 5 PM. I'll stay as long as you need me, or at least until 5 PM.

Shorten the phrase to 'As long as...' when answering a question to sound more natural.

I will go if you go. I'll go—as long as you do!

発音

az-LONG-az

Linking 'As long as'

The three words are usually spoken as one unit /əzˈlɒŋəz/ with the 's' in 'as' sounding like a 'z' and linking to 'long'.

Conditional Rise

As long as you're READY (rise), we can GO (fall).

The rise on the condition shows it is not yet finished.

暗記しよう

記憶術

Think of 'As Long As' as a 'Long Bridge': the bridge (result) only stands while the supports (condition) are there.

視覚的連想

Imagine a battery icon that stays green only while a charger is plugged in. The 'charger' is the condition, and the 'green light' is the result.

Rhyme

As long as you stay, I'll find a way; but if you go, the answer is no.

Story

A king tells his knight, 'You may keep this sword as long as you protect the realm.' The knight keeps the sword for 20 years because he never stops protecting the realm. The moment he stops, the sword is taken.

Word Web

ConditionDurationProvisoRequirementAgreementLimitContinuity

チャレンジ

Write three sentences about your dream job using 'as long as' to describe the conditions (e.g., salary, hours, location).

文化メモ

'So long as' is much more common in the UK than in the US, where 'as long as' dominates.

In US contracts, 'as long as' is often replaced by 'provided that' to sound more authoritative.

This structure is central to the 'individualist' contract culture, where relationships are often based on specific conditions.

Derived from Old English 'swa lange swa'.

会話のきっかけ

How long would you stay at a job you didn't like?

What are the conditions for a perfect friendship?

In your opinion, as long as someone is happy, does it matter what they do?

日記のテーマ

Describe your personal 'code of conduct'. What will you always do as long as you live?
Write a short dialogue between a landlord and a tenant discussing the rules of a new apartment.
Argue for or against the statement: 'As long as a government provides security, citizens should not complain about privacy.'

よくある間違い

Incorrect

正解


Incorrect

正解


Incorrect

正解


Incorrect

正解

Test Yourself

文を完成させる正しい形を選びましょう。

We can stay out late ___ you call your parents.

✓ Correct! ✗ Not quite. Correct answer: as long as
この文は、許可(「stay out late」)のための条件(「call your parents」)を表現しているので、「as long as」が正しい選択です。「as soon as」は即時性を意味し、「unless」は「~でない限り」を意味します。
文中の間違いを見つけて修正しましょう。 Error Correction

Find and fix the mistake:

You will get a promotion as long as you will work hard.

✓ Correct! ✗ Not quite. Correct answer: You will get a promotion as long as you work hard.
未来の条件に対して「as long as」を使う場合、「as long as」節の動詞は未来形ではなく現在形を使うべきです。
文法的に正しい文になるように単語を並べ替えましょう。 Sentence Reorder

Arrange the words in the correct order:

All words placed

Click words above to build the sentence

✓ Correct! ✗ Not quite. Correct answer: As long as it's safe, we can explore
正しい語順は、「as long as」を文頭に置き、その後に条件、そしてメインの節が続きます。

Score: /3

練習問題

8 exercises
Fill in the correct form of the verb.

I will stay here as long as it ___ (be) necessary.

✓ Correct! ✗ Not quite. Correct answer: is
We use the present simple after 'as long as' for future conditions.
Choose the best conjunction. 選択問題

You can borrow my bike ___ you bring it back by noon.

✓ Correct! ✗ Not quite. Correct answer: as long as
'As long as' sets the condition for borrowing.
Find the error in the sentence. Error Correction

Find and fix the mistake:

As long as you will keep practicing, you will improve.

✓ Correct! ✗ Not quite. Correct answer: will keep
Remove 'will' from the conditional clause.
Rewrite using 'as long as'. Sentence Transformation

If you don't make a mess, you can cook here.

✓ Correct! ✗ Not quite. Correct answer: You can cook here as long as you don't make a mess.
The meaning remains the same with the new conjunction.
Is the following rule true or false? True False Rule

'So long as' is generally more informal than 'as long as'.

✓ Correct! ✗ Not quite. Correct answer: False
'So long as' is actually more formal or emphatic.
Complete the dialogue. Dialogue Completion

A: Can I join the club? B: Yes, ___ you pay the fee.

✓ Correct! ✗ Not quite. Correct answer: as long as
Paying the fee is the condition for joining.
Which sentence is grammatically correct? Grammar Sorting

Select the correct sentence.

✓ Correct! ✗ Not quite. Correct answer: I'll help as long as I can.
Present simple 'can' is correct here.
Match the condition to the result. Match Pairs

1. As long as it's free... 2. As long as you're ready... 3. As long as he's quiet...

✓ Correct! ✗ Not quite. Correct answer: 1-A, 2-B, 3-C
A: I'll take it. B: We can leave. C: He can stay.

Score: /8

Practice Bank

12 exercises
文を完成させるのに最適な選択肢を選びましょう。 穴埋め問題

The concert will continue ___ the rain holds off.

✓ Correct! ✗ Not quite. Correct answer: as long as
文中の間違いを特定し、修正しましょう。 Error Correction

I can join the meeting as soon as you share the agenda.

✓ Correct! ✗ Not quite. Correct answer: I can join the meeting as long as you share the agenda.
正しい文を選びましょう。 選択問題

Choose the correct sentence:

✓ Correct! ✗ Not quite. Correct answer: As long as you stay calm, everything will be fine.
英語に翻訳しましょう。 翻訳

Translate into English: 'Estaré bien siempre y cuando tenga mi pasaporte.'

✓ Correct! ✗ Not quite. Correct answer: ["I'll be fine as long as I have my passport.","I will be fine as long as I have my passport."]
意味の通る文になるように単語を並べ替えましょう。 Sentence Reorder

Arrange these words into a sentence:

✓ Correct! ✗ Not quite. Correct answer: As long as you respect the rules, you can play
主語と正しい形を一致させましょう。 Match Pairs

Match the subjects with the correct form:

✓ Correct! ✗ Not quite. Correct answer: matched
最適な選択肢で文を完成させましょう。 穴埋め問題

I don't mind what we eat ___ it's not too spicy.

✓ Correct! ✗ Not quite. Correct answer: as long as
次の文の文法を修正しましょう。 Error Correction

As long as he doesn't forget, he will bring the drinks.

✓ Correct! ✗ Not quite. Correct answer: As long as he doesn't forget, he will bring the drinks.
文法的に正しい文を選択しましょう。 選択問題

Which sentence is correct?

✓ Correct! ✗ Not quite. Correct answer: The project will be approved as long as they meet the deadline.
「as long as」を使って、その文を英語に翻訳しましょう。 翻訳

Translate into English: 'Podemos ir a la playa siempre y cuando no llueva.'

✓ Correct! ✗ Not quite. Correct answer: ["We can go to the beach as long as it doesn't rain.","We can go to the beach so long as it doesn't rain."]
意味のある文になるように単語を並べ替えましょう。 Sentence Reorder

Arrange these words into a sentence:

✓ Correct! ✗ Not quite. Correct answer: You can stay in my room as long as you keep it clean
条件節と最も論理的な結果を一致させましょう。 Match Pairs

Match the conditions with their outcomes:

✓ Correct! ✗ Not quite. Correct answer: matched

Score: /12

よくある質問 (8)

Yes, you can use it to describe past conditions: 'He was happy as long as he had his dog.' Both verbs should be in the past tense.

'So long as' is slightly more formal and more common in British English. In most cases, they are interchangeable.

Almost, but 'as long as' emphasizes that the result continues only while the condition is met. 'If' is more general.

Yes! Just remember to put a comma after the first clause: 'As long as you are here, I am safe.'

This is a rule for all time and conditional clauses in English (like 'when', 'if', 'after'). We use the present to represent the future.

No, it often refers to a logical condition. 'As long as you have a ticket, you can enter' isn't about time, it's about the requirement.

Yes, 'provided that' or 'providing that' sounds more professional in contracts and formal emails.

Yes: 'Will you still love me as long as I'm poor?' It asks if the condition affects the result.

Scaffolded Practice

1

1

2

2

3

3

4

4

Mastery Progress

Needs Practice

Improving

Strong

Mastered

In Other Languages

Spanish moderate

siempre que / mientras

English uses indicative present; Spanish uses subjunctive.

French high

tant que

Tense choice (Future in French vs Present in English).

German high

solange

Word order (Verb-final in German).

Japanese moderate

〜限り (~kagiri)

Japanese places the conjunction at the end of the clause.

Arabic high

طالما (taalama)

Arabic is often followed by a past tense verb to indicate a standing condition.

Chinese high

只要 (zhǐyào)

Chinese lacks the 'duration' etymology found in English.

Learning Path

Prerequisites

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