我们写了封信来感激任何帮助我们的人
whoever引导的名词性从句whoever的意思“任何……的人”,在意义上大致相当于 anybody who.
whoever在从句中可用作主语或宾语.
如：I’ll take whoever wants to go.谁想去我就带谁去.
Whoever says that is a liar.说那话的人是个骗子.
She can marry whoever she chooses.她愿意嫁谁就嫁谁.
I’ll give the ticket to whoever wants it.谁想要这票,我就把它给谁.
Tell whoever you like — it makes no difference to me.你爱告诉谁就告诉谁吧,对我是无所谓的.