We'll have to start again If James doesn't remember.
We'll have to start again SHOULD JAMES NOT remember.
We wouldn't have got the contract if we weren't so clever.
We wouldn't have got the contract WERE WE NOT so clever.
My job would be easier if he weren't such a difficult person.
My job would be easier WERE HE NOT such a difficult person.
They wouldn't have been able to rescue the giraffe if they hadn't arrived in time.
They wouldn't have been able to rescue the giraffe had they not arrived in time.
If we announced the truth, we would receive a lot of criticism.
WERE WE TO ANNOUNCE the truth, we would receive a lot of criticism.
