Dear (要加 mother 或 mom),
Now I am writing to express my grantitude (gratitude) to you for these severy(several) years,a generous female who had done so much for me that I could never possible to repay (you).I feel ashamed to just accepted (accept) what you had done to me and take all of it for granted.it is the time to show my appreciation,sincere.(sincerely 和要去掉逗号)
Sitting at the table the memorise(memories) come back to me.you are a bussiness women (woman) and came to look after me seldom from my giralhood (girlhood),on a (an) occasion,you picked me up to (the) parks,took me to (the) zoos ,you drived (drove) me to the (shore of sea 改为 beach) and let me know the marvelous world.You cookde (cooked)) for me once a week,dedicated your spare time to spend with me.I recall that you never call me “sweatheart” instead of teaching me to be kindness (kinder) and modest (modesty),which the most precious common sense you thought.In addition,you prepared everything to (for) me and tried your best to make up me.however,I campliande (complained) about you for your successive leaving,pretende (pretend) to haven’t been aware of your efforts and consideration.
To be honesty ,I am (was) not a responsible daughter for ignore (ignoring) your hardness even (that 改为 though) I have been already conscious,so please give me a chance to send (you) my heartfelt gratefulness,(and) thank you all the time,my beloved mom.
(Daughter of) Yours
有甚多错字,已替你更正好了,