How do you use "going to vs will" in a sentence?

I'm going to study medicine.' (decided plan) I'll help you with that.' (spontaneous offer) Look at those clouds - it's going to rain.' (evidence) I think it will rain tomorrow.' (opinion/belief)

going to vs will

Q: What does "going to vs will" mean?

Choosing between two future forms Use 'going to' for plans/intentions already decided, or predictions based on evidence. Use 'will' for spontaneous decisions, offers, promises, and predictions based on opinion/belief. Both can express future, but with different nuances.

Grammar Pattern BritishAmericanAustralian ★★★★★ Very Common Neutral

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Meaning: Choosing between two future forms

选择两种未来形式

Elegir entre dos formas futuras

2つの未来形から選ぶ

두 가지 미래 표현 중 선택하기

Use 'going to' for plans/intentions already decided, or predictions based on evidence. Use 'will' for spontaneous decisions, offers, promises, and predictions based on opinion/belief. Both can express future, but with different nuances.

'Going to'用于已决定的计划/意图，或基于证据的预测。'Will'用于临时决定、提议、承诺和基于观点/信念的预测。两者都可以表达未来，但有不同的细微差别。

Usa 'going to' para planes/intenciones ya decididos, o predicciones basadas en evidencia. Usa 'will' para decisiones espontáneas, ofertas, promesas y predicciones basadas en opinión/creencia. Ambos pueden expresar futuro, pero con diferentes matices.

「Going to」はすでに決まった計画/意図、または証拠に基づく予測に使います。「Will」は自発的な決定、申し出、約束、意見/信念に基づく予測に使います。両方とも未来を表せますが、ニュアンスが異なります。

이미 결정된 계획/의도나 증거에 기반한 예측에는 'going to'를 사용합니다. 즉흥적인 결정, 제안, 약속, 의견에 기반한 예측에는 'will'을 사용합니다. 둘 다 미래를 표현할 수 있지만 뉘앙스가 다릅니다.

Examples

I'm going to study medicine.' (decided plan)
我打算学医。'（已决定的计划）
Voy a estudiar medicina.' (plan decidido)
医学を勉強するつもりです。'（決まった計画）
의학을 공부할 거예요.' (결정된 계획)
I'll help you with that.' (spontaneous offer)
我来帮你。'（临时的提议）
Te ayudaré con eso.' (oferta espontánea)
手伝いますよ。'（その場での申し出）
제가 도와드릴게요.' (즉석 제안)
Look at those clouds - it's going to rain.' (evidence)
看那些云——要下雨了。'（证据）
Mira esas nubes - va a llover.' (evidencia)
あの雲を見て——雨が降りそう。'（証拠）
저 구름 좀 봐 — 비가 올 거야.' (증거)
I think it will rain tomorrow.' (opinion/belief)
我觉得明天会下雨。'（观点/信念）
Creo que lloverá mañana.' (opinión/creencia)
明日は雨だと思います。'（意見/信念）
내일 비가 올 것 같아요.' (의견/믿음)

Pronunciation

Usage Guide

Context: spoken, written, everyday

Tone: predictive

✓ Do Say

I'm going to see the doctor tomorrow. (appointment)
我明天要去看医生。（预约）
Voy a ver al doctor mañana. (cita)
明日医者に行く予定です。（予約）
내일 병원에 갈 거예요. (예약)
I'll answer the phone. (spontaneous)
我去接电话。（临时决定）
Yo contestaré el teléfono. (espontáneo)
電話に出ます。（自発的）
제가 전화 받을게요. (즉흥적)
Careful! You're going to fall! (evidence)
小心！你要摔倒了！（证据）
¡Cuidado! ¡Te vas a caer! (evidencia)
気をつけて！転びそう！（証拠）
조심해! 넘어질 거야! (증거)
I think the exam will be hard. (opinion)
我觉得考试会很难。（观点）
Creo que el examen será difícil. (opinión)
試験は難しいと思います。（意見）
시험이 어려울 것 같아요. (의견)
I'm going to visit my parents tomorrow.
我明天打算去看望父母。
Voy a visitar a mis papás mañana.
明日、両親を訪ねる予定です。
나는 내일 부모님을 방문할 거야.
I'll help you!
我来帮你！
¡Yo te ayudo!
手伝いますよ！
내가 도와줄게!

✗ Don't Say

I'll visit my parents tomorrow. (if already planned, use 'going to')
I'll visit my parents tomorrow.（如果已经计划好，用'going to'）
I'll visit my parents tomorrow. (si ya está planificado, usar 'going to')
I'll visit my parents tomorrow.（すでに計画しているなら「going to」を使う）
I'll visit my parents tomorrow.（이미 계획했다면 'going to'를 사용）
I'm going to help you! (spontaneous decision = use 'will')
I'm going to help you!（临时决定 = 用'will'）
I'm going to help you! (decisión espontánea = usar 'will')
I'm going to help you!（自発的な決定 = 「will」を使う）
I'm going to help you!（즉흥적인 결정 = 'will'을 사용）

Origin & History

Future tense distinction

Cultural Context

Era: Modern

Generation: All ages

Social background: Universal