"I'm glad you wrote to me" 是一种常用的表达方式，表示对对方写信的高兴。
来源："I'm glad" 是一个常用的短语，意思是 "我很高兴"， "you wrote to me" 是一个完整的句子，意思是 "你给我写信"。
例句：
"I'm glad you wrote to me. It's nice to hear from you." (我很高兴你给我写信。能收到你的来信很好。)
"I was so happy when I saw that you wrote to me." (看到你给我写信时，我非常高兴。)
"Your letter made my day. I'm glad you wrote to me." (你的信让我的一天变得美好。我很高兴你给我写信。)