i'm sorry to hear that.是什么意思

I'm sorry to hear that .作文 I‘m sorry to hear that. 翻译.I'm sorry to hear that. I'm very sorry to hear that. I'm sorry to ________(hear) that i am sorry to hear that.是什么意思? i'm sorry (to hear)that为什么填to hear I'm sorry (hear) that. i'm sorry to hear that .that可以换成this I'm sorry to hear that.为什么要加to? I`m sorry to hear “I'm sorry to hear