a. Our neighbour lost all her friends because she was two- faced woman
→ If  our neighbour had not been two-faced woman, she would not have lost all her friends
b. They tried to cross the border illegally, so they were arrested and expatriated
→ If they had not tried to cross the border illegally, they would not have been arrested
c. I didn’t know he was so rich, that’s why I didn’t marry him.
→ I would have married him, if i had known he was so rich
d. Karim didn’t stay in France because he didn’t like the way he was treated at work.
→ If karim had liked the way he was treated  at work, he would have have stayed in France