I want to know that how long you will send it to my home?这句话为什么由that 和how 两个词引导?

I want you to know that someone out there cares. Which i learn that you want to know something Asia. That is just what I want to know.可不可以写成That is what I just want to know. I want to know more! I want to know why I want to know ______ I want to know you. i dont want to know I want to know you I know that that is impossible, but I also want to go什么意思 I want to let you know that I care about you 为什么一定要that 英语翻译I want to let you know that I am very happy to get your email. I want to let you know that I leave you to be better I want to know.I need to so ,I won't和I don't know that I want to … I want you to know that I still like you.什么意思 I really want you to know that I really love you. I don't want to admit that somethings I know.语法有错误吗