要说用法,最简单的就是：
Thanks. = Thank you.意思都是：谢谢.
Thanks very much. = Thank you very much.意思是：非常感谢.
Thanks for calling. = Thank you for calling.
意思是：谢谢你的来电.
语法方面 ：
thank
vt.（及物动词） 谢谢, 感谢
Thank you so much! 非常感谢!
n. （名词）感谢, 谢谢.
That lady gave thanks to me.那位小姐向我致谢.
thanks
n. （名词）感谢, 谢意
Thanks for your help. 谢谢你的帮助.