1)He
would not go there if his family were not invited.
2)Even if you had given her your car, she could not have arrived in so short a
time.
3)Someone might notice if she opened the letter.
4)If I knew her better, I would introduce you.
5)Even if I wanted to, I could do nothing now.
6)If I had a dictionary, I would finish the translation today.
7)If you trusted me, I could lead you
safely through.