to my relief
让我感到欣慰（安慰）的是,.
relief [ri'li:f] n.减轻,解除；救济；安慰
类似的还有：
to my surprise,the teacher was late.
让我惊讶的是,老师以迟到了.
to在这里都是 “另.,对.”
relief,surprise都是名词 ,要从语法来讲的话,就是：
to sb's +（形容词的名词）=形容词 to sb（宾格）
语感：
to my surprise=surprising（令人感到惊讶的） to me
to my relief=relieving（令人放松的,令人减轻痛苦的） to me
例句：
Much to my relief the car was not damaged.
很让我感到欣慰的是,汽车没有受损.
To my relief,the dirt road ended up ahead.
让我心里多少有些安慰的是,泥路终于到头了.
To my relief,he realized the importance of study.
使我宽慰的是,他认识了学习的重要性.
To my relief,the child has come to know that he should correct the mistake whenever he finds it.
使我欣慰的是,这孩子开始懂得了"有错必改".
To my surprise I won the game.
使我吃惊的是,我居然赢了这场比赛.
To my surprise it was a stranger.
令我感到吃惊的是,那是位陌生人.
To my surprise ,he wrote so well.
令我惊奇的是他写的那麽好.