Dear Thomas，
    I'm sothankful to you for your kindness and help in the oral English training course．My spoken English hasgreatly improved owing to the effective training program，during which I made many newfriends．【高分句型】（说明收获）
I used to be shy and un-talkative．When staying with my classmates，I tried to communicate with them in English，but I often made mistakes．Whenever I met with nativespeakers，I had a strong willing to practice English，but I wasn't brave enough to open my mouth，which worried me for a longtime．【高分句型】Luckily enough，your training course smoothed away all the difficulties．I have benefited from it．（表达谢意）
     Now，I'm glad to learn you are to organize more training courses，and I hope I can get youradvice on how to improve my writing．In short，I'm looking forward to more new things in our future courses．（提出建议或要求） Dear Thomas，
    I'm sothankful to you for your kindness and help in the oral English training course．My spoken English hasgreatly improved owing to the effective training program，during which I made many newfriends．【高分句型】（说明收获）
I used to be shy and un-talkative．When staying with my classmates，I tried to communicate with them in English，but I often made mistakes．Whenever I met with nativespeakers，I had a strong willing to practice English，but I wasn't brave enough to open my mouth，which worried me for a longtime．【高分句型】Luckily enough，your training course smoothed away all the difficulties．I have benefited from it．（表达谢意）
     Now，I'm glad to learn you are to organize more training courses，and I hope I can get youradvice on how to improve my writing．In short，I'm looking forward to more new things in our future courses．（提出建议或要求）