i think you can give a sweet smile for thanks!!! you can have a try... 呵呵

中文有好多表达方式: 1.太谢谢你了，你这是帮了我的大忙，我会记你一辈子的。 2.我今天碰到菩萨了。 3.碰到你真是老天有眼。 ~~~~~~~~~ 用我蹩脚的英语给你回答试试： 1.Thank you very much.You really helped me a lot!I remember you all my life. 2.I met a celestial bodhisattva today. 3.You are god has eyes met. ~~~~~~~I hope eveyone correct.

谢谢，很感谢你，

kiss (use cautiously) or hug.

ex : i love u very much