这个是我写的，分享一下你吧Dear Mr.White:

  We’re deeply sorry to hear of the passing of your president,Mr.Smith.Mr.Smith was the person who initiated business with our company and it is under his leadership that the business between our two companies expanded continuously in the past few years.We owe much of our current success to Mr.White and we are very grateful to his for what his has done for us.

  Please accept our heartfelt condolences and convey deepest sympathies to his family.

  Yours Sincerely