Conditional Sentences Type III
Objective: The primary learning objective of this worksheet is to teach and practice the formation and application of the Third Conditional in English.
Content and Methods: The worksheet provides a clear explanation of the Third Conditional, defining it as a structure used to talk about imagined past situations and their outcomes (the "impossible conditional"). It offers an example to illustrate its use and outlines typical contexts such as expressing regrets, giving criticism and reflecting on the past. The methods include multiple-choice questions where learners select the correct verb form to complete Third Conditional sentences, tasks requiring them to identify and mark the verb forms in given sentences, and gap-fill exercises where they must write the correct verb form into panels.
Competencies:
- English grammar knowledge (Third Conditional)
- Understanding of hypothetical past situations and their consequences
- Correct application of past perfect and conditional perfect forms
- Sentence construction and verb conjugation in complex conditional structures
Target Audience and Level:
B2 - English
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Target group and level
B2 - English
Subjects
Conditional Sentences Type III


What is the third conditional?
The third conditional, also known as type-III if-clause, looks back at a past situation and its outcome and imagines them as different. It is the only conditional structure that talks about the past rather than the present or future. Because third conditional if-clauses talk about a past situation that did not happen, they are also known as the impossible conditional.
Example:
I didn’t study. I didn’t pass the exam. (reality)
but: If I had studied, I would have passed the exam. (imagined past)
Typical contexts for third conditional if-clauses include:
expressing regrets, giving criticism and feedback, reflecting on the past