Had I known that I would never have come.
要是早知道，我絕不會來的。
It is estimated the project will last four years.
據估計，這項工程將持續四年。
This will not be possible in the changed economic climate.
這在經濟氣候已經改變的條件下是不可能的`。
Research will be needed as a preliminary to taking a decision.
作出決定之前需要進行研究。
This will give a yield of 10% on your investment.
這會給你的投資帶來10%的利潤。