The document discusses the different types of conditional phrases in English: zero conditional, first conditional, second conditional, and third conditional. It explains that conditionals are used to talk about real or unreal situations and generally use the word "if". While there are no verb tenses for conditionals in English like in Spanish, the auxiliary verb "would" is used to form conditionals. Examples are provided for each type of conditional to illustrate how they reflect the probability of the stated condition and result.