This document discusses the three types of conditionals in English: 1) The first conditional refers to possible real events and uses the structure "If + present, will/can + infinitive". 2) The second conditional refers to hypothetical or unlikely events and uses the structure "If + past tense, would + infinitive". 3) The third conditional refers to hypothetical events in the past and uses the structure "If + past perfect, would have + past participle". Examples are provided for each conditional along with exercises for the reader. The document concludes with a brief overview of the three conditionals.