Grammar Rule in 30 Seconds
'As long as' sets a condition (if) or describes a duration (while), but never uses 'will' in its own clause.
- Use it for conditions: 'You can go as long as you finish your work.'
- Use it for duration: 'I'll stay as long as I'm needed.'
- Never use 'will' after it: 'As long as it rains (not will rain), we stay.'
Overview
As long as は、主節（メインの文）を特定の条件または期間に結びつける従属接続詞です。B2レベルの学習者にとって、これを使いこなすということは、単なる if や while を超えて、より正確で、要求が高く、具体的な関係性を表現できるようになることを意味します。As long as を使うことで、ある行動の絶対的な前提条件を定義したり、何かが真実である期間全体を説明したりすることが可能になります。As long as は、その中心において、2つの distinct な方法で機能します。条件として使う場合、「〜である限り」「〜という条件でのみ」という意味になり、厳格な要件を設定します。時間的マーカーとして使う場合、「〜である期間全体」という意味になり、継続的な、期間が一致する状態を強調します。この二重性を理解することが、ネイティブスピーカーのような精度でこのフレーズを、交渉や合意、説明において使用するための鍵となります。As long as は、副詞節（条件または期間を示す部分）を主節（結果または同時に起こる出来事を示す部分）にリンクすることによって機能します。言語学的な原則は範囲の限定です。as long as 節は、論理的または時間的な、定義された境界を設定し、その境界内でのみ主節が有効となります。as long as は必要かつ十分な前提条件を設定します。これはゲートキーパーのようなものです。主節は、as long as 節の条件が満たされた場合にのみ「有効」にすることができます。これは、複数の可能性のうちの1つを導入することが多い単純な if よりも強力で制限的です。- 原則: 条件を表す副詞節を作り、主節を制限します。その含意は、この条件なしでは主節は無効になるということです。
provided that（〜という条件で）またはonly if（〜である場合にのみ）という意味だと考えてください。 - 例:
You can join the project as long as you meet the weekly deadlines.（毎週の締め切りを守ることが、プロジェクトに参加するための譲れない条件です。） - 例:
The app is free to use as long as you agree to the terms of service.（利用規約に同意するということが、無料で使用するための唯一の前提条件です。）
as long as は時間の経過を表します。主節の行動や状態が、副詞節の行動や状態の全期間にわたって継続することを示します。2つの出来事は期間が一致します。つまり、同時に始まり、同時に終わります。- 原則: 主節の行動の寿命を定義する時間を表す副詞節を作り出します。
for the entire time that（〜である全期間）またはthroughout the period in which（〜である期間を通して）という意味です。 - 例:
I will remember what you did for me as long as I live.（あなたが私のためにしてくれたことを、私は生きている限り覚えているでしょう。） - 例:
She felt safe as long as the lights were on.（彼女は、電気がついている間ずっと、安全だと感じていました。）
as long as が条件を導入するか、期間を定義するかによって異なります。主な区別は、as long as 節内で使用される動詞の時制にあります。as long as 節は、最初の条件文（if 節）と同じパターンに従います。未来の可能性を指していても、現在時制を使用しなければなりません。主節は、未来形 (will)、助動詞 (can, may)、または命令形を使用します。[Main Clause: Future/Modal] + as long as + [Condition: Present Simple] | You will succeed as long as you work hard. |as long as first | As long as + [Condition: Present Simple], + [Main Clause: Future/Modal] | As long as you work hard, you will succeed. |- ルール: 条件を示す
as long as節の中でwillを使用してはいけません。未来の結果は主節にあります。 - 例:
We can go to the concert as long as we finish our work first.（まず仕事を終える限り、コンサートに行くことができます。） - 例:
As long as the traffic isn't too bad, I'll be there by 8 PM.（交通渋滞がひどくない限り、8時までには着きます。）
as long as 節の時制は、出来事が並行する時間枠で起こっていることを示すために、論理的に一致させる必要があります。現在時制は進行中の状況に、過去時制は完了した状況に使用されます。[Main Clause: Present] + as long as + [Duration: Present] | I am happy as long as I have my dog with me. |as long as first | As long as + [Duration: Present], + [Main Clause: Present] | As long as the music is playing, the party continues. |[Main Clause: Past] + as long as + [Duration: Past] | They felt secure as long as they were together. |as long as first | As long as + [Duration: Past], + [Main Clause: Past] | As long as he paid his rent, the landlord never bothered him. |as long as 節が文頭に来る場合、主節から区切るためにコンマが必要であることに注意してください。この句読点のルールは、英語のすべての導入副詞節に標準的であり、明確な文章のために不可欠です。if や while の代わりに as long as を選ぶことで、特定のニュアンスが加わります。2つの節の関係をより強く、より明確にしたい場合に使用します。As long as は、その条件が決定的な要因であることを示します。これは取引、規則、境界の言葉です。- 厳格な規則付きで許可を与える場合: 何かを与えるが、必須の条件が付随します。これは子育てや管理職でよく見られます。
You can play video games as long as your homework is finished.（宿題が終わっている限り、ゲームをしてもいいですよ。）- 1つの要因に基づく保証を述べる場合: 単一のアクションに完全に依存する肯定的な結果を約束します。
You'll keep your account secure as long as you use a strong password.（強力なパスワードを使用している限り、アカウントは安全に保たれます。）- 合意または交渉の条件を設定する場合: 取引を進めるために必要な唯一のものを明確にします。
I'll accept your offer as long as payment is made within 30 days.（支払いが30日以内に行われる限り、そのオファーを受け入れます。）- 個人的な境界を設定する場合: 快適または満足するために何が必要かを述べます。
I don't mind where we eat as long as they have vegetarian options.（ベジタリアンオプションがある限り、どこで食べても構いません。）
if を使うと弱く聞こえます。If you use a strong password は、それが良いアドバイスであることを示唆しますが、as long as you use a strong password は、セキュリティのための唯一の条件としてそれを位置づけます。As long as は、2つの状態が時間的に完全に一致していることを強調します。一方がもう一方の全期間にわたって続きます。- 永続的な感情や状態を表現する場合: 特定の期間、中断なく続く状態を説明します。
I'll love you as long as the stars are in the sky.（星が空にある限り、あなたを愛し続けます。） （詩的で誇張された使い方です。）- 継続的な運用規則を説明する場合: サービスの利用可能性を期間に結び付けます。
The library's online resources are available as long as you are an enrolled student.（在籍している学生である限り、図書館のオンラインリソースは利用可能です。）- 継続的な状況に依存するコミットメントを述べる場合:
He plans to remain with the company as long as it offers opportunities for growth.（会社が成長の機会を提供する限り、彼は会社に残るつもりです。）
while も使えることがありますが、as long as は中断のない全期間という感覚をより強く提供します。I felt happy while I was on vacation は良いですが、I felt happy as long as I was on vacation は、その幸せが休暇の開始から終了まで、全体の期間にわたったことを強調します。as long as に関して、いくつかの予測可能な間違いを犯しがちです。これらの間違いの背後にある論理を理解することが、それを避けるための鍵です。- 1. 条件節での
willの使用
if, when, unless, as long as を含む）は、現在単純形を使用します。- 誤り:
*I'll lend you the money as long as you will pay me back next month. - 正解:
I'll lend you the money as long as you pay me back next month. - 理由: 条件節は未来の出来事を説明しているのではなく、未来の出来事が起こるために必要な現在の条件を述べています。
as long asはすでに未来を指しているので、willを追加すると冗長で文法的に誤りとなります。
- 2.
as long asとas far asの混同
As long as は条件または期間を指します。As far as は知識の範囲または物理的な距離を指します。- 誤り:
*As far as I'm concerned, you can use my office as far as you keep it tidy. - 正解:
As far as I'm concerned, you can use my office as long as you keep it tidy. - 理由:
As far asは視点 (as far as I know...「私の知る限りでは」) や文字通りの境界 (go as far as the river...「川まで行く」) を導入します。条件を導入することはできません。
- 3. 期間を示す際の不適切な時制の一致
as long as 節の時制は、時間的に調和している必要があります。- 誤り:
*He enjoyed the job as long as his boss is supportive.（過去の主節、現在の期間節。） - 正解:
He enjoyed the job as long as his boss was supportive. - 理由: 2つの行動は同じ時間枠で起こっています。その時間枠が過去であれば、両方の動詞がそれを反映すべきです。
- 4.
ifの方が適切な場合にas long asを使いすぎる
As long as は、しばしば単一の強力な条件を意味します。単純な仮定的な状況にそれを使用すると、不自然または過度に強調して聞こえることがあります。一般的な可能性については、if が通常より良い選択肢です。- 不自然:
As long as it's sunny tomorrow, we'll have a picnic.（明日晴れている限り、ピクニックをします。）（ピクニックが晴天のみにかかっている厳粛な約束のように聞こえます。） - より自然:
If it's sunny tomorrow, we'll have a picnic. - 理由: 条件を決定的なゲートキーパーとして強調したい場合は、
as long asを使用します。単に潜在的な計画を述べているのであれば、ifの方が慣用的です。
- 5. 導入節でのコンマの忘れ
as long as 節で始まるときは、主節の前にコンマが必要です。- 誤り:
*As long as you have your ticket you can enter. - 正解:
As long as you have your ticket, you can enter. - 理由: コンマは導入された従属節の終わりを示し、読者にとって文の構造を明確にします。
As long as は、条件や期間を表す他の表現と混同されることがあります。それぞれの違いを理解することが重要です。as long as | Condition: only if, provided that Duration: for the whole time that | Sets a strict condition or emphasizes a continuous parallel duration. | You can borrow my car as long as you fill the tank. (Condition) He was happy as long as he was with his friends. (Duration) |if | Condition: introduces a possible condition | Introduces a general condition or possibility. Less restrictive than as long as. | If it rains, we will stay home. |while | Duration: during the time that | Indicates two actions happening at the same time. Can sometimes overlap with as long as for duration, but as long as emphasizes the *entire* period. | He read a book while he was waiting. |unless | Condition: if not | Introduces the *only* condition under which something will *not* happen. | I won't go unless you come with me. |as long as) | Japanese (Equivalent) | Scenario |As long as you study, you will pass. (Condition) | 「勉強する限り、合格するでしょう。」「もし勉強するなら、合格するでしょう。」 (より一般的) | 試験前の約束や励まし |I'll wait as long as you need. (Duration) | 「あなたが望む限り待っています。」「あなたが望む間待っています。」 | 相手の都合を待つ姿勢 |As long as の「〜限り」は、条件の場合は「〜という条件が満たされている間だけ」という限定的なニュアンスが強く、期間の場合は「その全期間にわたって」という継続性を強調します。単純な「〜なら」や「〜の間」よりも、より強い結びつきや範囲を示唆します。As long as は if とどう違いますか？If は一般的な条件や可能性を提示しますが、as long as はより厳格で、譲れない、または唯一の条件であることを強調します。例えば、「If you finish your homework, you can play.」は宿題を終えたら遊べる、という一般的な許可ですが、「As long as you finish your homework, you can play.」は、宿題を終えることが絶対条件であり、それ以外は許されない、というニュアンスが強まります。As long as は期間を表すとき、while とどう違いますか？as long as は、主節の出来事が副詞節の出来事の全期間にわたって継続していることを強調します。一方、while は単に2つの出来事が同時に起こっていることを示します。例えば、「I was happy while I was on vacation.」は休暇中に幸せだったことを示しますが、「I was happy as long as I was on vacation.」は、休暇の最初から最後までずっと幸せだった、という継続性を強調します。As long as の節で will を使ってはいけないのはなぜですか？As long as が条件を表す場合、それは未来の出来事に対する現在の条件を述べています。英語の条件文（if や when など）では、未来の結果を伴う場合でも、条件を示す節には現在形を使います。will は未来の意志や予測を表すため、条件節に使うと文法的に誤りとなります。未来のことは主節で表現します。As long as はフォーマルな場面でも使えますか？as long as はフォーマルな場面でもインフォーマルな場面でも使われます。特に、契約書、合意事項、規則の説明など、条件を明確に設定する必要があるフォーマルな文脈で非常に役立ちます。例えば、ビジネス契約で「The warranty is valid as long as the product is used under normal conditions.」（製品が通常の条件下で使用されている限り、保証は有効です。）のように使われます。As long as が文脈の中でどのように使われるかを見ることで、それがどのように正確に社会的および専門的なやり取りを管理するかを明らかにします。- 職場での交渉（Slackメッセージ）:
Sure, we can push the feature launch to Friday, as long as marketing confirms the new promotional assets are ready by then. That's the only blocker.- *分析*: これは典型的な条件付きの使用法です。発言者は変更に同意しますが、すぐに1つの譲れない要件を設定します。協力的ですが、断固としています。
- 個人的な境界設定（テキストメッセージ）:
- A:
Can my cousin stay with us for a few days?（いとこが数日間私たちに泊まってもいい？） - B:
That's fine, as long as he's okay with sleeping on the couch. We don't have a guest room.（ソファで寝ても大丈夫な限りは、いいよ。ゲストルームはないんだ。） - *分析*: ここでも、許可は「ソファで寝ても大丈夫」という条件付きです。この条件が満たされない場合、許可は無効になります。
- サービス利用規約（ウェブサイトのFAQ）:
You can access all premium features as long as your subscription is active.- *分析*: これは期間と条件の両方のニュアンスを含みます。サブスクリプションがアクティブである全期間、プレミアム機能にアクセスできる、という期間の強調と同時に、アクティブであることが条件である、という両方の意味合いがあります。
- 提案への同意（友人との会話）:
- A:
Let's go hiking this weekend if the weather is good.（天気が良ければ、今週末ハイキングに行こう。） - B:
Sounds great! I'm in, as long as we can start early in the morning.（いいね！行くよ、早朝に出発できるなら。） - *分析*: Bは提案に同意しますが、早朝出発という自身の条件を追加しています。これにより、Bの参加は早朝出発に依存することが明確になります。
as long as が日常生活や仕事の場面で、明確さ、合意、そして境界の設定にどのように役立つかを示しています。日本語の「〜限り」や「〜である間は」といった表現と似ていますが、英語の as long as は、特に条件を示す場合に、より強く、より限定的なニュアンスを持つことが多いです。この点を意識して使い分けることで、より自然で正確な英語表現が可能になります。Clause Structure with 'As Long As'
| Main Clause Tense | Conjunction | Subordinate Clause Tense | Example |
|---|---|---|---|
|
Future (will)
|
as long as
|
Present Simple
|
I will stay as long as you need.
|
|
Modal (can/may)
|
as long as
|
Present Simple
|
You can go as long as you are careful.
|
|
Present Simple
|
as long as
|
Present Simple
|
It works as long as you plug it in.
|
|
Past Simple
|
as long as
|
Past Simple
|
He waited as long as he could.
|
|
Imperative
|
as long as
|
Present Simple
|
Keep quiet as long as the baby sleeps.
|
Common Variations
| Full Form | Alternative | Usage Note |
|---|---|---|
|
as long as
|
so long as
|
More common in spoken English, slightly more emphatic.
|
|
as long as
|
provided (that)
|
More formal, used in writing and contracts.
|
|
as long as
|
on condition that
|
Very formal, emphasizes the specific rule.
|
Meanings
A conjunction used to express a condition that must be met for something else to happen, or to indicate the duration of an action.
Conditional (Proviso)
Used to say that something will happen only if something else happens first; similar to 'provided that'.
“I'll lend you the money as long as you pay me back next week.”
“As long as everyone agrees, we can start the meeting early.”
Temporal (Duration)
Used to describe an action that continues for the same amount of time as another action.
“I will remember that day as long as I live.”
“He stayed in the library as long as it was open.”
Emphatic Limit
Used to emphasize that a situation exists only up to a certain point or under specific constraints.
“As long as we are winning, nobody complains about the coach.”
“The car will run fine as long as you change the oil regularly.”
Reference Table
| 機能 | 意味 | 例 | 主な特徴 |
|---|---|---|---|
|
Condition
|
〜という条件で / 〜の場合に限り
|
You can go, as long as you finish your homework.
|
「as long as」節は現在形
|
|
Duration
|
〜の間ずっと
|
I'll stay as long as you need me.
|
継続する行動と時制が一致
|
|
Condition
|
規定 / 要件
|
As long as you agree, we'll proceed.
|
強い「もし〜ならば」を暗示することが多い
|
|
Duration
|
継続する出来事
|
The party lasted as long as the music played.
|
時間の長さに焦点を当てる
|
|
Condition
|
条件付きの許可
|
You can use my car, as long as you fill it up.
|
主節が条件に依存
|
|
Duration
|
同時発生
|
I'll be happy as long as I'm learning.
|
行動が同時に起こる
|
フォーマル度スペクトル
You may utilize the vehicle provided that the fuel tank is replenished. (Borrowing a car)
You can borrow the car as long as you put some gas in it. (Borrowing a car)
Take the car, so long as you gas it up. (Borrowing a car)
Car's yours, just don't leave it on empty, alright? (Borrowing a car)
「As Long As」— 2つのスーパーパワー
機能1：条件
- Only If 排他的な要件
- Provided That 規定
- Present Simple 「as long as」節の時制
- Future Main Clause しばしば「will」または助動詞
機能2：期間
- For the Period That その期間中ずっと
- While 同時進行の行動
- Flexible Tense 継続する行動と一致
- Continuous Action 途切れない期間を記述
「As Long As」 vs. 「If」 vs. 「As Far As」
「As Long As」の使い分けフローチャート
前提条件や要件を設定していますか？
何かがどれくらい続くかを説明していますか？
「As Long As」の実践
条件のシナリオ
- • 共有物のルール設定
- • 条件付きの許可
- • 就職面接での規定
- • プロジェクト合意条件
期間のシナリオ
- • 継続的な楽しみの描写
- • 継続的なコミットメント
- • 一生の思い出
- • テクノロジー使用制限
レベル別の例文
I am happy as long as you are here.
I am happy as long as you are here.
He sleeps as long as the cat sleeps.
He sleeps as long as the cat sleeps.
We play as long as it is sunny.
We play as long as it is sunny.
I wait as long as I can.
I wait as long as I can.
You can go out as long as you come home early.
You can go out as long as you come home early.
I will help you as long as I have time.
I will help you as long as I have time.
As long as the bus is on time, we will arrive at 9.
As long as the bus is on time, we will arrive at 9.
She doesn't mind the rain as long as she has an umbrella.
She doesn't mind the rain as long as she has an umbrella.
You can borrow my laptop as long as you don't change the settings.
You can borrow my laptop as long as you don't change the settings.
As long as you follow the instructions, the cake will be delicious.
As long as you follow the instructions, the cake will be delicious.
I'll stay in this job as long as I keep learning new things.
I'll stay in this job as long as I keep learning new things.
We can win the game as long as we stay focused.
We can win the game as long as we stay focused.
The company will thrive as long as it continues to innovate.
The company will thrive as long as it continues to innovate.
As long as there is a demand for the product, we will produce it.
As long as there is a demand for the product, we will produce it.
You are free to do what you want as long as it doesn't hurt anyone.
You are free to do what you want as long as it doesn't hurt anyone.
I don't care about the price as long as the quality is high.
I don't care about the price as long as the quality is high.
As long as the underlying assumptions remain unchallenged, the theory holds.
As long as the underlying assumptions remain unchallenged, the theory holds.
We can maintain this pace as long as our resources are managed effectively.
We can maintain this pace as long as our resources are managed effectively.
As long as the witness's testimony is consistent, the case is strong.
As long as the witness's testimony is consistent, the case is strong.
I am willing to negotiate as long as the other party shows good faith.
I am willing to negotiate as long as the other party shows good faith.
As long as the human spirit perseveres, there is hope for reconciliation.
As long as the human spirit perseveres, there is hope for reconciliation.
The treaty is binding as long as the signatories adhere to the specified protocols.
The treaty is binding as long as the signatories adhere to the specified protocols.
As long as the market remains in this state of flux, volatility is inevitable.
As long as the market remains in this state of flux, volatility is inevitable.
One may argue that art exists only as long as there is an audience to perceive it.
One may argue that art exists only as long as there is an audience to perceive it.
間違えやすい
Learners use 'as long as' to mark an end point.
Learners mix up these two 'as...as' idioms.
Both can mean 'during the time that'.
よくある間違い
I am happy as long as you will be here.
I am happy as long as you are here.
I wait as long as 5:00.
I'll wait until 5:00.
As long as it rains, I stay home.
As long as it's raining, I'll stay home.
I like you as long as you are nice.
I'll like you as long as you're nice.
You can play as long as you will finish your food.
You can play as long as you finish your food.
I'll help you as long as you help me.
I'll help you as long as you help me.
As long as the bus comes, we are okay.
As long as the bus comes, we'll be okay.
I'll stay as long as you will want.
I'll stay as long as you want.
As long as I know, he is coming.
As far as I know, he is coming.
I'll work as long as I'll get paid.
I'll work as long as I get paid.
As long as the project will be completed by Friday, we are safe.
As long as the project is completed by Friday, we are safe.
The contract is valid as long as the payment was made.
The contract is valid as long as the payment is made.
As long as I am concerned...
As far as I am concerned...
文型パターン
You can ___ as long as you ___.
I will ___ as long as I ___.
As long as ___, the ___ will ___.
___ is possible as long as ___.
Real World Usage
I'm happy to travel for work as long as it's not more than once a month.
I'll come to the party as long as there's food lol.
The tenant may keep a pet as long as no damage is caused to the property.
You can stay up late as long as you're quiet.
The app will sync as long as you have a stable internet connection.
The tour is free as long as you book through our website.
Present Simple Power
Don't Mix 'As Far As'
Comma When Leading
Subtle Negotiation
Context is King
Smart Tips
Use 'as long as' instead of 'if' to sound more committed and clear about your terms.
Immediately delete the 'will' and check if the verb needs an -s for third person.
Use 'as long as' to emphasize that the duration is linked to another event.
Consider if 'provided that' or 'on condition that' might be better if the tone is very serious.
発音
Weak Form of 'As'
The word 'as' is usually unstressed and pronounced with a schwa /əz/.
Linking
The 'g' in 'long' often links to the following 'as'.
Conditional Rise
As long as you're READY... (rise), we can GO (fall).
The first clause sets the expectation, the second provides the result.
暗記しよう
記憶術
Think of 'As Long As' as a 'Long Bridge'. You can only cross the bridge (Result) while the bridge is standing (Condition).
視覚的連想
Imagine a battery powering a lightbulb. The light stays on 'as long as' the battery has power. If the battery dies, the light goes out immediately.
Rhyme
As long as the sun is in the sky, I'll be there to say hi.
Story
A king tells a knight, 'You can live in my castle as long as you protect the gate.' The knight protects the gate for 20 years, so he lives there for 20 years. One day he stops, and the king kicks him out.
Word Web
チャレンジ
Write down 3 'deals' you have in your life using 'as long as' (e.g., with your boss, your partner, or your pet).
文化メモ
'So long as' is used more frequently in the UK than in the US, especially in spoken contexts.
Using 'as long as' in negotiations is seen as direct and fair, clearly outlining expectations.
It is often used in 'conditional parenting,' where rewards are tied to behavior.
Derived from Old English 'ealswa' (as) and 'lang' (long). The conditional use developed in Middle English.
会話のきっかけ
How long would you stay at a job you didn't like?
What are your conditions for lending money to a friend?
As long as you live in your current city, what places will you visit?
Do you think a relationship can last as long as there is love, or is more needed?
日記のテーマ
よくある間違い
Test Yourself
You can borrow my car ___ you return it with a full tank of gas.
Find and fix the mistake:
She will be successful as long as she will keep practicing.
Arrange the words in the correct order:
All words placed
Click words above to build the sentence
Score: /3
練習問題
8 exercisesI will stay here as long as it ___.
You can borrow my car ___ you bring it back by 10 PM.
Find and fix the mistake:
As long as you will study hard, you will pass the exam.
I'll help you, but only if you help me too.
1. As long as you're quiet... / 2. As long as it's free... / 3. As long as I'm alive...
You can use 'will' after 'as long as' if you are talking about the distant future.
A: Can I go to the party? B: Yes, ___.
A. You can stay as long as you want. / B. You can stay as long as you pay.
Score: /8
Practice Bank
10 exercisesWe can stay at the park ___ it doesn't rain.
正しい文を選びましょう：
次の文を英語に翻訳しましょう：「Siempre y cuando estudies, aprobarás el examen.」
You can leave early as far as you finish your tasks.
単語を並べ替えて正しい文を作りましょう：
節を組み合わせましょう：
正しい文を選びましょう：
The library is open ___ the university is in session.
次の文を英語に翻訳しましょう：「Ella seguirá aprendiendo mientras tenga curiosidad.」
単語を並べ替えて正しい文を作りましょう：
Score: /10
よくある質問 (8)
Yes, they are interchangeable. `So long as` is slightly more common in spoken British English and can sound a bit more emphatic, but the grammar rules are identical.
Yes. If the main action happened in the past, the condition also uses the past tense. Example: `He stayed as long as he could.`
English grammar treats `as long as` like `if` or `when`. These are conjunctions that introduce time or conditional clauses, which require the Present Simple to refer to the future.
Yes, it is slightly more formal and specific. It implies a 'proviso' or a 'continuous condition' rather than a simple one-off possibility.
Absolutely. Just remember to use a comma after the first clause. Example: `As long as you are happy, I am happy.`
`Provided that` is much more formal and usually found in writing or legal contexts. `As long as` is the standard choice for daily life.
No, it can also mean 'while' or 'for the duration of'. Example: `I'll remember this as long as I live.`
Yes. Example: `You can stay as long as you don't make a mess.`
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
siempre y cuando / mientras
English uses present simple; Spanish often uses the subjunctive.
tant que / pourvu que
French allows future tense after 'tant que'; English does not.
solange
Word order in the subordinate clause.
〜限り (~kagiri)
Japanese structure is [Verb/Noun] + kagiri.
طالما (talama)
Arabic can also imply a 'since' or 'because' meaning.
只要 (zhǐyào)
Chinese often requires a correlative 'jiù' in the second clause.
Learning Path
Prerequisites
Learn These First
関連動画
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