to与for表目的时。to用作不定式后接动词原形，而for则直接后接名词。
I asked her to give me the key.
I asked her for the key.
They decided to base the new company in York.
他们决定将新成立的公司总部设在约克郡。
A number of measures were taken to alleviate the problem.
采取了一系列措施缓解这个问题。
He had to go to hospital for treatment.
他不得不去医院接受治疗。
