What are conditional sentences in English?
Conditional sentences express situations that depend on certain conditions being met. They consist of an if-clause (condition) and a main clause (result). Corpus research shows native speakers use over 20 different conditional patterns, far more than the three types most textbooks teach.
Zero Conditional
If + present simple, present simple
"If you heat ice, it melts."
First Conditional
If + present simple, will + infinitive
"If it rains, I will stay home."
Second Conditional
If + past simple, would + infinitive
"If I were rich, I would travel."
Third Conditional
If + past perfect, would have + pp
"If I had studied, I would have passed."




