Fill in the Blanks Third Conditional Fill in the BlanksOnline version Test your knowledge of the third conditional by filling in the blanks with the correct verb forms. by Emmanuel Valenzuela Hernandez 1 third conditional different outcomes impossible past participle passed unlikely past perfect hypothetical situations 'would have' past regrets example speaker unreal situations 'if' The is used to talk about in the . It is formed by using + , followed by + . For : If I had studied harder , I would have the exam . In this sentence , the is talking about a situation in the past ( not studying hard enough ) and the result of that situation ( not passing the exam ) . The third conditional is used to express , , or to imagine in the past . It is important to note that the third conditional is used for situations that are or to happen .