Dear Miss Wang:
親愛的王老師：
I am writing to express my sincere gratitude for your help in my study. Without your hel, my study would not be the top three in my class. It was you who always standed by me when I am fall. You pointed my mistakes and told me how to make them right. You always worked tirelessly to train my patience. Your continuous encouragement is my greatest motivation.
我寫信是爲了表達我對您在我學習上的幫助的.衷心感謝。沒有您的幫助，我不會在班前三。您總是在我當我跌倒的時候支持我，指出我的錯誤，並告訴我如何做對它們。你總是孜孜不倦地培養我的耐心，您不斷的鼓勵是我最大的動力。
I sincerely hope that you can have a good health and stay happy. In addition, I wonder if you can pay a lot of attention to your health, get more rest.
我真誠地希望你能有一個良好的健康以及保持快樂。另外，我想如果你得多注意你的健康，更多的休息。寫給老師的英文感謝信
Again, I sincerely thank you for your help!
再次，我真誠地感謝你的幫助！