Deep in Chile’s Atacama Desert, engineers are currently building the world’s largest telescope. When it opens, it will transform our understanding of the universe. The project is going to be one of the greatest scientific achievements of this century.
Three sentences — three different future forms. You may have met will, going to and the present continuous before, but at B2, the goal is to choose between them precisely, not just approximately. This guide shows you exactly when each one fits, using real facts about Chile as your context.
The three main future forms — a B2 overview
| Form | Structure | When to use it | Quick signal words |
|---|---|---|---|
| Will | subject + will + base verb | Spontaneous decisions · general predictions without visible evidence · promises · offers · threats | I think, probably, I’m sure, I promise |
| Going to | subject + be going to + base verb | Plans made before speaking · predictions based on visible/known evidence | I’ve decided, look!, they’ve already, according to |
| Present continuous | subject + be + verb-ing | Fixed arrangements with another person or organisation (time + place already agreed) | on 15 April, at 9 a.m., next Thursday |
The distinctions that matter at B2
Will vs going to for predictions
Both will and going to can make predictions — but the source of the prediction is different.
- Use going to when you have visible, current evidence: Look at those clouds — it’s going to rain.
- Use will for a more general or personal belief, without pointing to something you can see right now: I think it will rain at some point this weekend.
Going to vs present continuous for plans
Both can express plans, but they carry different levels of commitment:
- Going to = you’ve decided, but nothing is necessarily booked: I’m going to visit the Atacama Desert one day.
- Present continuous = it’s arranged — the flight is booked, the meeting is in the diary, the appointment is set: I’m flying to Santiago on 4 November.
Will for spontaneous decisions
When you decide something at the moment of speaking — not before — use will:
- The copper samples have arrived. Great — I‘ll call the laboratory now. (you decided just now)
- Let me help you with that — I‘ll carry the telescope case. (spontaneous offer)
Chile in context: the future forms in action
Chile is a country with a genuinely extraordinary future ahead. These real facts give you authentic context for each form.
The world’s largest telescope
In Chile’s Atacama Desert, the European Southern Observatory (ESO) is building the Extremely Large Telescope (ELT). With a primary mirror 39 metres across, it is going to be the largest optical telescope on Earth. According to ESO, it will allow astronomers to study the atmospheres of planets outside our solar system and search for signs of life. The Atacama was chosen because its altitude (over 3,000 m) and near-zero humidity mean the sky is clear for more than 300 nights per year. The site — Cerro Armazones — is becoming one of the most important places in modern science.
Building in progress → present continuous · Plan with known timeline → going to · General scientific prediction → will
Copper and the clean energy transition
Chile produces approximately 25% of the world’s copper — more than any other country on Earth. As electric vehicles and renewable energy systems expand, demand for copper is going to rise significantly in the coming decades. The Chilean government has already announced that it is investing in new infrastructure to expand production capacity. Some economists predict Chile will export more copper in the next twenty years than it has in its entire history.
The world’s longest country
Chile stretches approximately 4,300 kilometres from north to south — the longest country on the planet. Plans to develop Patagonia for sustainable tourism are underway: the government is going to extend the southern road network, and several new national park visitor centres are opening next year. Tourism authorities say Chile will attract a record number of visitors this year, driven by demand for adventure travel and nature tourism.
Rapa Nui: a historic negotiation
Easter Island — known in indigenous Polynesian as Rapa Nui — is one of the most remote inhabited places on Earth, and it belongs to Chile. The island is home to more than 900 moai stone statues, a UNESCO World Heritage Site since 1995. The indigenous Rapa Nui community is negotiating greater territorial autonomy with the Chilean government — a process that is going to reshape how the island governs itself and manages its cultural heritage. Many observers believe this will set an important precedent for indigenous rights across Latin America.
Common mistakes for Spanish speakers
1. Using “will” for a pre-made plan
Spanish uses ir a + infinitivo for both pre-made plans and general predictions, so Spanish speakers sometimes reach for will when going to or present continuous is needed.
✗ I will fly to Santiago next month. (if the flight is already booked)
✓ I’m flying to Santiago next month. (fixed arrangement)
✓ I’m going to fly to Santiago next month. (plan made in advance)
2. Using the present continuous for a vague intention
The present continuous needs a real arrangement — a date, a booking, a confirmed meeting. Without that, use going to.
✗ I’m learning astronomy next year. (no course booked yet)
✓ I’m going to learn astronomy next year. (personal intention)
3. Using “will” in an if-clause
Spanish can use the future tense in both clauses of a conditional sentence. English cannot: after if, when, as soon as, use the present simple.
✗ If the telescope will be ready in 2028, scientists will begin observations.
✓ If the telescope is ready in 2028, scientists will begin observations.
4. Forgetting “be” in “going to”
In Spanish, voy a already includes the verb ir, so the structure is built in. In English, forgetting the auxiliary be creates an incomplete sentence.
✗ Chile going to break copper export records this decade.
✓ Chile is going to break copper export records this decade.
5. Translating “va a” as “goes to” (movement confusion)
When going to expresses future intention, it must be followed by a base verb — otherwise it reads as physical movement.
✗ She’s going to the conference. (ambiguous — is she walking there now, or planning to attend?)
✓ She’s going to attend the conference. (clearly future plan)
✓ She’s attending the conference on Thursday. (fixed arrangement)
Example bank
- The Extremely Large Telescope will be the largest optical telescope ever built. (prediction)
- ESO is currently building the ELT on Cerro Armazones. (arrangement in progress)
- Construction is going to be completed within this decade. (plan with known timeline)
- — The samples are ready. — Great, I‘ll call the lab immediately. (spontaneous decision)
- Chile will attract a record number of tourists this year, according to projections. (general prediction)
- The copper industry is expanding its infrastructure this quarter. (arrangement already underway)
- Demand for copper is going to rise sharply as electric vehicle production increases. (prediction based on current evidence)
- Our research team is flying to Santiago on 12 November — flights are booked. (fixed arrangement)
- I think renewable energy will replace fossil fuels within 50 years. (personal prediction)
- The Rapa Nui community is negotiating a new autonomy agreement with the government. (in-progress arrangement)
- The government is going to invest in new Patagonian roads next year. (announced plan)
- I’ve decided — I‘m going to learn Spanish before I move to Chile. (personal intention)
- The international astronomy conference starts at 9 a.m. tomorrow. (fixed timetable → present simple)
- Scientists believe the ELT will detect signs of extraterrestrial atmospheres. (scientific prediction)
- We are visiting the Atacama in March — we booked everything last week. (fixed arrangement)
- Chile won’t overtake itself — it’s already the world’s top copper producer! (negative will)
- If you visit Easter Island, you will see the moai up close. (first conditional — not will in if-clause)
- According to the report, the new mine is going to open in spring. (pre-made plan with evidence)
Quick practice quiz
Choose the most natural future form for each context.
- Look at that storm front moving in — we ______ (get) soaked if we don’t leave now.
- I ______ (call) you back in five minutes. (you just decided)
- She ______ (present) at the Atacama symposium on 3 December. (she’s confirmed and registered)
- If the ELT ______ (be) ready ahead of schedule, astronomers ______ (begin) observations early. (complete both gaps)
- We’ve already decided: the team ______ (spend) two weeks in the Atacama next summer studying the site.
Show answer key ▾
- ‘re going to get — visible evidence (you can see the storm)
- ‘ll call — spontaneous decision made at this moment
- is presenting — fixed arrangement with confirmed date
- is / will begin — present simple in if-clause; will for prediction in result clause
- is going to spend — pre-made plan (“we’ve already decided”)
Sources: Atacama Desert as driest non-polar desert — Wikipedia: Atacama Desert; Chile’s length (~4,300 km) and geography — World Atlas; Chile copper production (~25% of global supply) — USGS National Minerals Information Center; ELT telescope and Cerro Armazones — ESO: Extremely Large Telescope; Easter Island / Rapa Nui UNESCO status — UNESCO World Heritage List.