If Conditional type 3
If Conditional Type 3 Form if + Past Perfect, main clause with Conditional II Example: If I had found her address, I would have sent her an invitation. The main clause can also be at the beginning of the sentence. In this case, don't use a comma. Example: I would have sent her an invitation if I had found her address. Note: Main clause and / or if clause might be negative. See Past Perfect and Conditional II on how to form negative sentences. Example: If I hadn’t studied, I wouldn’t have passed my exams. Use Conditional Sentences Type III refer to situations in the past. An action could have happened in the past if a certain condition had been fulfilled. Things were different then, however. We just imagine, what would have happened if the situation had been fulfilled. Function The type 3 conditional refers to an impossible condition in the past and its probable result in the past. These sentences are truly hypothetical and unreal, ...