1.我来自泰安,一座位于山东省的城市
I am from Tai'an ,which is a city located in Shandong province.
2.我希望我们能够很快的彼此了解
I hope we can get to know each other very soon.
3.I am sure you（must去掉,前面的sure已经有肯定的 意思了） know something about Mountain
4.I don't konw if you have a knowledge of my hometown（可以这样说,have a knowledge of 是了解的意思）