英语翻译说明：本来到今年12月底之前我还有3天年假,但是由于工作很多,想和领导申请将时限延长到明年3月底前.我应该怎么表达呢?注明：我想要比较地道的英文表达,所以请不要麻烦用翻译软件了...

Dear sir
You know I should have a short holiday for the the Spring Festival, however, I have so much work to do that I'll miss this holiday.
so I beg you can understand me and delay this holiday to the end of March next year.
If ok, I'll appreciate you for your kindness.

Thanks and Best regards
yours
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以上我所写的仅供参考。具体的还需要您自己润色一下啦

Dear sir,
I still have 3-days annual leave by the end of this year.As for the business,I would like to postpone the deadline of my annual leave to March 31th,2009.Thank you for your understanding and approval.
仅做参考