各位高手帮我翻译一下给英语老师的信啊！

Google的翻译还不错，只需要改动少数地方就行，你试试。
Dear 老师的名字,Happy Teacher's Day!

Time always pasts so fast, it is with you through the second Teacher's Day, you selflessly dedicated their youth to us, lead us into the knowledge of the sea. On this particular day, for you have given me everything. You worked hard!
I've always liked you, knowledgeable and always extends a number of extra-curricular knowledge to us, let us be more open vision. A cheerful disposition, giving the impression is always very kind, just like an old friend.

Ah, you always liked me, discouraged me, but I make you disappointed, and I am very depressed too, but in any case, I would seriously in English, intention to learn.

Teacher, you're hard（这里换个词比较好～）, and wish you happy forever!

My dear teacher,happy Teacher's Day!
How time flies!This is the second festival we have spent together.You dedicate your youth to educate us ,unselfish.You lead us to approach to the sea of knowledge.On this special day,I want to thank you for all you have gave me.You have being so hard!
I like you all the time.You have extent knowledge,and you always extend many extracurricular knowledge to us to make our outlook brither.What's more,you are very out-going ,and you are so kind for us that you seem to be an old friend to us.
I know ,you like me and regard highly of me.But I make you disappointed.And I feel sad.Well,no matter what,I will be serious of English and to learn English with my heart.
My dear teacher,wish you happy forever!

自己翻译的哈！看看吧。