急求一篇给grandmother的感谢信!!!!!!!!!!!!!

。。。你能不能具体说一下要感谢什么呢。。？
要不然怎么写啊？？？

Dear grandmother:
i am zoe,thanks for helping me with my study!
when i wasn't able to work out some questions,you did everything you could to help me ,even through you couldn't understand all of questions.So i study harder than before because of i didn't want to let you worried about my study and i wanted you happy with my hard works!
thank you,dear grandmother,thank you for all what you have done!i love you!
yours
zoe
。。。。。。。太笼统，就不能详细点么。。泪奔。
我是初三的。。。不知道你多大。。所以可能有点那个啥啥啥。。
我写的不好。。。。抱歉！~~