Two future forms, one key question: When was the decision made? Master both structures with all their uses, phrasal verbs, and real-life examples.
Two Ways to Talk About the Future
English has two main future forms — and each one has a different meaning
In English, we use Going To and Will to talk about the future. However, they are not interchangeable — the meaning changes depending on the situation.
The most important question is: When was the decision made? If you decided before speaking → use Going To. If you decide at the moment of speaking → use Will. This lesson will teach you all the specific uses of each form.
Use Going To when you have already made a plan or decision before the moment of speaking. You can also use it when you can see evidence that something is about to happen.
Use Will when you make a decision, offer, or promise at the moment of speaking. Also use it for predictions based on your opinion or belief, and for future facts.
Ask yourself: "When was the decision made?"
→ Decision made BEFORE speaking (plans, intentions, visible evidence) = Going To
→ Decision made AT THE MOMENT of speaking (offers, spontaneous choices, beliefs) = Will
By the end of this lesson, you will be able to:
Going To — Form & Structure
How to form affirmative, negative, and questions with Going To
| Subject | Affirmative ✅ | Negative ❌ |
|---|---|---|
| I | I am going to study. / I'm going to study. | I am not going to study. / I'm not going to study. |
| You | You are going to travel. / You're going to travel. | You are not going to travel. / You aren't going to travel. |
| He / She / It | She is going to work. / She's going to work. | She is not going to work. / She isn't going to work. |
| We | We are going to visit. / We're going to visit. | We are not going to visit. / We aren't going to visit. |
| They | They are going to play. / They're going to play. | They are not going to play. / They aren't going to play. |
Wh- word + Am/Is/Are + Subject + going to + BASE VERB?
What are you going to do tomorrow? · Where is she going to travel? · When are they going to arrive?
Going To — When to Use It
The 3 main situations where Going To is the correct choice
Pre-made Plans & Intentions
You decided BEFORE the moment of speaking — plans, arrangements, or intentions that already exist
Evidence-Based Predictions
You can see, feel, or hear something RIGHT NOW that tells you what is about to happen
Life Plans & General Intentions
Long-term decisions or life goals that you have decided on at some earlier point
Will — Form & Structure
How to form affirmative, negative, and questions with Will
| Subject | Affirmative ✅ | Negative ❌ |
|---|---|---|
| I | I will help. / I'll help. | I will not help. / I won't help. |
| You | You will pass. / You'll pass. | You will not pass. / You won't pass. |
| He / She / It | She will arrive. / She'll arrive. | She will not arrive. / She won't arrive. |
| We | We will try. / We'll try. | We will not try. / We won't try. |
| They | They will win. / They'll win. | They will not win. / They won't win. |
won't is the contracted negative form of will not. It is very common in spoken English. Note the spelling — it drops one 'l': will not → won't (NOT "willn't").
I won't tell anyone. · She won't be late. · They won't forget.
Wh- word + Will + Subject + BASE VERB?
What will you do? · Where will she go? · When will they arrive? · Who will help you?
Will — When to Use It
The 5 main situations where Will is the correct choice
Spontaneous Decisions
You decide RIGHT NOW, at the moment of speaking — not before
Predictions Based on Opinion or Belief
You believe something will happen — but you have no visible evidence right now
Offers & Volunteering
You spontaneously offer to do something for someone else
Promises
You make a commitment to someone — you give your word
Future Facts & Polite Requests
Things that will definitely happen (facts), or polite requests using "Will you…?"
Going To vs. Will — The Big Comparison
Side-by-side summary of every use — know exactly which form to choose
Going To → I already thought about this. The decision is NOT happening now.
Will → I'm thinking about this RIGHT NOW. The decision is happening as I speak.
| Use / Situation | 🔵 Going To | 🟡 Will |
|---|---|---|
| Pre-made plans | ✅ "I am going to visit my mom tomorrow." (planned yesterday) | ❌ Not for plans made in advance |
| Spontaneous decisions | ❌ Not for decisions made right now | ✅ "I'll answer the door." (decided this second) |
| Evidence-based predictions (you can see it) | ✅ "Look! It's going to rain." (you see the clouds) | ❌ Less natural with visible evidence |
| Opinion / belief predictions (no evidence) | ❌ Less natural without evidence | ✅ "I think it will rain tomorrow." (just your belief) |
| Offers | ❌ Not used for spontaneous offers | ✅ "I'll help you." (offer made right now) |
| Promises | ❌ Less common for promises | ✅ "I will never lie to you." (personal commitment) |
| Life plans & intentions | ✅ "I am going to learn Japanese." (decision already made) | ⚠️ Can work, but going to is more natural |
| Future facts | ⚠️ Can work if the fact is pre-scheduled | ✅ "She will be 25 next year." (objective fact) |
| Polite requests | ❌ Not used for requests | ✅ "Will you please close the door?" (polite ask) |
✅ Plans made before speaking
✅ Evidence-based predictions (you can see it)
✅ Life plans and intentions
Structure: am/is/are + going to + base verb
✅ Spontaneous decisions (decided now)
✅ Opinion/belief predictions (no evidence)
✅ Offers, promises, future facts, requests
Structure: will + base verb
Time Expressions with Future Forms
Common time words and phrases used with Will and Going To
Most time expressions can be used with both Will and Going To. The choice between the forms does not depend on the time expression — it depends on the situation (pre-planned vs. spontaneous). These words simply tell you when the future event will happen.
| Time Expression | Used with | Examples |
|---|---|---|
| tomorrow | Both ✓ |
I am going to call her tomorrow. I think it will rain tomorrow. |
| tonight | Both ✓ |
We are going to study tonight. I'll probably watch a movie tonight. |
| next week / next month / next year | Both ✓ |
They are going to travel next month. I think she will graduate next year. |
| soon / later | Both ✓ |
He is going to call you back soon. I'll talk to you later. |
| in [number] days / weeks / months | Both ✓ |
She is going to move in three weeks. He will retire in five years. |
| this weekend / this afternoon / this evening | Both ✓ |
We are going to visit grandma this Sunday. I'll finish the project this afternoon. |
| in the future | Both ✓ |
I am going to start my own business in the future. Technology will change everything in the future. |
| right now / immediately (for spontaneous decisions) |
Will ✓ |
"There's no milk!" — "I'll go buy some right now." Decision made at this exact moment → Will |
| Look! / Watch out! / Be careful! (with visible evidence) |
Going To ✓ |
Look! The vase is going to fall! You can SEE it happening → Going To |
Phrasal Verbs in the Future
10 essential phrasal verbs used naturally with Will and Going To
Phrasal verbs combine with will and going to exactly the same way as regular verbs. The structure does not change — just replace the regular verb with the phrasal verb.
Examples: Subject + will + phrasal verb · Subject + am/is/are + going to + phrasal verb
Common Mistakes to Avoid
The most frequent errors students make with Will and Going To
Audio Examples — Listen & Repeat
Practice listening to natural Going To and Will sentences out loud
Click any card to hear the sentence. Practice repeating after each one.
Reading Passage
Read and identify Going To (blue) and Will (orange) in a real Costa Rica context
My cousin Sebastián called me last night, and I told him everything about our upcoming trip to La Fortuna de San Carlos. We planned it two weeks ago, and I am so excited!
First, we are going to leave San José early on Friday morning — around 5 a.m. — because we want to avoid traffic. The drive will probably take about three hours. Luisa already bought the tickets, so we are going to travel by bus.
When we arrive, we are going to check in at a small eco-hotel near the Arenal Volcano. A friend recommended it last month, and it looks beautiful online. After checking in, we are going to have lunch at a traditional soda — a local Costa Rican restaurant. I already know what I am going to order: rice, beans, and fresh fish!
In the afternoon, we are going to hike the Arenal Volcano National Park trail. My friend who visited last year said the views are incredible. I think it will be the best experience of the whole trip. Oh — Sebastián just told me he wants to join us on the hike! I will call the park right now to check if there is space for one more person.
In the evening, we are going to relax at the Tabacón Hot Springs. We reserved our spots two weeks ago because they get very busy on weekends. The warm water will feel amazing after a long day of hiking. I am sure everyone will love it.
On Saturday morning, we are going to go white-water rafting on the Sarapiquí River. The guide sent us a message yesterday and said the river level is perfect right now — it will definitely be an exciting and safe ride! Do not worry about equipment — the company will provide everything we need: helmets, life jackets, and paddles.
After rafting, we have not decided yet. Maybe we will visit La Fortuna Waterfall, or maybe we will just find a nice restaurant and relax. I will decide when I see how tired everyone is.
I am going to take my camera on the whole trip because I want to photograph the Arenal Volcano, the wildlife, and the beautiful green landscape of Alajuela. Sebastián just said: "Do not worry about lunch on Saturday — I'll pack some sandwiches for everyone!" What a great cousin!
I am sure this trip will be one of the most beautiful memories of the year. La Fortuna de San Carlos will not disappoint us — it never does!
Answer the questions based on the reading passage above.
Grammar Practice Quiz
Test your knowledge of Will and Going To — 20 questions