This document outlines different types of conditional clauses in English. It discusses conditional statements for general truths using "if" and the simple present tense. It also covers conditional situations that are possible but uncertain using "if", the simple present, and "will". Finally, it discusses conditional clauses for imaginary situations in the present using "if", the simple past, and "would/could"; and imaginary situations in the past using "if", the past perfect, and "would have" plus the past participle.

3. 4. Imaginary situations in the past IF + PAST PERFECT + WOULD HAVE + PAST PARTICIPLE Examples: * If I had seen her, I would have said hello * She would have died in the accident if she hadn’t benn wearing her seat belt