英国习惯用 Yours sincerely,
美国习惯用 Sincerely yours,
还有一个区别就是,Yours sincerely 比 Sincerely yours 要更正式一点.
‘Yours sincerely' is the standard and polite way of ending a letter.The words mean very little.
'Sincerely yours' sounds warmer,more friendly,more personal.You use it when writing to a friend.
总体来讲,两个都可以用,只不过一个比较 formal (正式) 一个比较 informal.
建议给朋友写信时用 Sincerely yours,跟老师写信时用 Yours Sincerely.