do you know how to write an english letter and envelope?翻译汉语

Do you know how to write an English letter and envelope?When How to write a English envelope? I can tell you how to write an English letter.(改为复数形式) do you know how to write DO you know,in chinese"chun'how to write.you are poor and po how to write a letter in english How do you finish____(write) the letter do you know how to write chinese on computer? 翻译一下Do you know how to learn English well?Let me tell you .I Write me a letter and let me know how you are getting on wit Direction:Write an envelope for the following letter. how to write an english composition?