1. We may not be able to give the concert.
=> The concert may have to be cancelled. 
2, I only recognized him when he came into the light. 
= > Not until he came into the light did i recognize him 
3, It is quite pointless to complain
⇒ There is no point in complaining
4, As far as I know he is still working in Bristol 
=> To the best of my knowledge, he is still working in Bristol
5, It was his incompetence which led to their capture.
⇒ If it hadn't been for his incompetence, they wouldn't have been captured
6) He wasn't to balme for the accident.
=> The accident wasn't his fault.
7, In the end,I felt I had been right to leave the club
=>  I had no regrets about having left the club. 
8, .He talked about nothing except the weather (sole)
=>  His sole topic of conversation was the weather.