1. He can't apply for the job because he is old.
-> If he weren't old, he could apply for the job.
2. I can't join in your trip as I promised because I have to finish my report on books.
-> If i didnt have to finish my report on books, i would join in your trip as I promised.
3. "Don't play with the matches!" I said to Jack
-> I warned Jack not to play with the matches.
4. The boy asked his mother's permission and then went our to play.
-> Having asking his his mother's permission, the boy went our to play.
5. After Lee had had dinner, she went out for walk.
-> Having had dinner, Lee then went out for walk.
6. We can't have breakfast in the garden because it is very cold.
-> It is so cold that we can't have breakfast in the garden.
7. I regretted that I had told him about mysorrow.
-> I regretted having told him about mysorrow.
8. I like the car. I will buy it.
-> The woman thought...