i feel very happy to you can come to china 中的to为何能和that换用.还有feel...to是啥句型

这应该是个错误的句子,I feel very happy that you can come to China. that引导的是状语从句i feel very happy to hear you can come to china我本想写这个。这个对吗？没见过这样feel...to第二个正确，那不是feel...to...结构，也没有这个结构，to 是不定式，后面接动词原形，和feel连用时往往表原因，比如：He was (或felt) very surprised to see me. I am glad to help you.