They _________ (know) about the meeting; nobody told them.
can't know
👉 It’s impossible they know — no one informed them.
Give me an example of the Zero Conditional.
Explain use and form.
Zero conditional
Used for FACTS or General Truths.
🧠 Structure: If + present simple, + present simple.
I'm certain Camila didn't reveal your secret.
Camila _________ your secret. (reveal)
can't have revealed
What is the only planet in our solar system that rotates clockwise?
Venus.
Complete the following conditional:
If you heat water, ________
it boils.
Zero conditional
Used for FACTS or General Truths.
🧠 Structure: If + present simple, + present simple.
He _______ (be) at work; his car is parked outside the office.
MUST
👉 We’re almost sure it’s true — strong deduction based on evidence.
Give me an example of the First Conditional.
Explain use and form.
First conditional
Real or Possible situations in the future, consequences
🧠 Structure: If + present simple, + will + base verb.
I'm sure Emi realised how wrong he was. (realise)
Emi ...................................... how wrong he was.
must have realised
Which element has the chemical symbol “K”?
Potassium
Complete the following conditional:
If it rains tomorrow, ________
I’ll stay at home.
First conditional
Real or Possible situations in the future, consequences
🧠 Structure: If + present simple, + will + base verb.
That _______  (be) Anna calling — she’s still in Spain!
can’t be
👉 We’re sure it’s impossible — strong negative deduction.
Give me an example of the Second Conditional.
Explain use and form.
Second conditional
Hypothetical or imaginary situations in the present of future.
🧠 Structure: If + past simple, + would + base verb.
It is possible that they sold their house.
They ________ their house.
may have sold
might have sold
What is the smallest country in the world by land area?
Vatican City
Complete the following conditional:
If I won the lottery, ________
I would buy a big house.
Second conditional
Hypothetical or imaginary situations in the present of future.
🧠 Structure: If + past simple, + would + base verb.
You _______ (be) tired after such a long flight.
must be
👉 Logical conclusion based on the situation.
Give me an example of the Third Conditional.
Explain use and form.
Third conditional
Imaginary situations in the past
🧠 Structure: If + past perfect, + would have + past participle.
My car keys are possibly in the kitchen.
I ___________ my car keys in the kitchen. (leave)
might have left
may have left
could have left
Which artist painted The Persistence of Memory (the melting clocks)?
Salvador Dalí
Complete the following conditional:
If I had studied harder, ________
I would have passed the exam.
Third conditional
Imaginary situations in the past
🧠 Structure: If + past perfect, + would have + past participle.
This soup tastes strange. It _______ (have) too much salt.
might have
👉 We’re not sure — it’s just a possibility.
Give me an example of a Mixed Conditional.
Explain use and form.
Mixed conditional
This one mixes an imaginary past with a consequence in the present.Explicación: Combina un pasado irreal 
🧠 Structure: If + past perfect, + would + base verb.
It is impossible that Victor was at school last night.
Victor _________ at school last night. (be)
can't have been
How many bones are there in the adult human body?
206
Complete the following conditional:
If I had gone to bed earlier, ________
I wouldn’t be so tired now.
Mixed conditional
This one mixes an imaginary past with a consequence in the present.Explicación: Combina un pasado irreal 
🧠 Structure: If + past perfect, + would + base verb.