Future Simple: Promises, Offers & Decisions

⚡ Spontaneous decision

Situation happens→I'll / I willverb (decided RIGHT NOW)

"The phone is ringing." → "I'll get it!"

"We have no bread." → "I'll go to the shop."

Key: the decision was NOT made before. It happens at the moment of speaking.

🤝 Offers with Shall

ShallI / weverb (base form)?

Shall I open the window? (offering to do something for you)

Shall we go for a walk? (suggesting something to do together)

Shall I vs Shall we: I = for you only; we = both of us together

🤞 Promises

I willverb (positive promise)

I won'tverb (promise NOT to do)

I will be there for you. (positive promise)

I won't tell anyone. (promise not to do something)

I won't let you down. (promise of loyalty)

Comparing spontaneous will vs planned going to

Situation	will (spontaneous)	be going to (planned)
You see a heavy bag	"I'll carry that!" (decided now)	: (no plan before)
You planned to help	❌	"I'm going to help him move." (planned last week)
Phone rings	"I'll get it!" (instant decision)	❌
You booked a trip	❌	"I'm going to Paris." (already booked)

Common mistakes to avoid

❌ "I'm going to carry that for you." (if decided just now → use will!)

✅ "I'll carry that for you."

❌ "Shall you open the door?" (Shall is only for I and we in offers)

✅ "Shall I open the door?"

Three uses of will

⚡ Spontaneous decision

"It's hot." → "I'll open the window." (decided right now)

🤝 Offer (Shall I/we)

"Shall I get you a coffee?" / "Shall we go?"

🤞 Positive promise

"I'll call you tonight." / "I'll be there for you."

🚫 Negative promise

"I won't be late." / "I won't tell a soul."

Future Simple Promises, Offers & Decisions